It would appear that "doctrine" means "teachings".....which would include what Jesus taught and said, not only about how we should live but about who He was.  It would also include what the prophets speaking God's Words said about Jesus.  I have chosen to put my faith in the actual teachings/words of Jesus Christ and those words that have come from God's prophets.  I do not put my faith primarily in the words from any man....unless those words from man also reflect what Jesus and the prophets also taught. 
Jesus taught that He was the Son of God.  He taught us to pray to the Father in Christ's name.  He taught that He came to die upon the cross for the restoration of ALL mankind, who believe on HimHe taught the 10 Commandments , how we are to love God and our fellow man.  He taught the Lord's Prayer which positions us where our hearts desire should Whom and to what we should be praying for above all else...which also is all about the end times we are now in.  He taught self sacrifice (Daily Sacrifice) for others if they were not following Evil.  He taught that He would die upon the cross in payment for our sins, for all those who believe on Him.  He taught that He would descend to Hell/Holding Place for 3 days and nights, and than resurrect  in His Transformed Body for 40 days and nights, to teach His apostles more, and than He would ascend to Heaven to sit at the Right Hand of God, until His return at the sounding of the last trumpet, which announces the end of the Age of mankind, and His rule as King of Kings over all kingdoms on earth, burning the tares and establishing The Day of the Lord/1000 year Millennium Kingdom of God on earth with perfect teaching, no more confusion brought about by man or satan during this time.  He taught that when He ascended after the 40 days and nights that He would send the Holy Spirit to dwell within all of those who believe on Him to be our guide and teacher.....and comforter so that we would not be alone during His absence until His return....or until we die and are with Him once more.  He taught that we must endure in our love and faith unto the end.

Below are scriptures that speak to "doctrine".....check them out....and then check out the Words from Jesus' mouth and the mouth of the Prophets of God in the Old Testament.....than always measure those Words against the words coming from a man's mouth.  If you do not have a Bible....there are many online....don't limit yourself to one version....check back and forth between the versions to see if they say the same thing.

Deuteronomy 32:2   (Read all of Deuteronomy 32)

My doctrine shall drop as the rain, my speech shall distil as the dew, as the small rain upon the tender herb, and as the showers upon the grass:

Job 11:4   (Read all of Job 11)

For thou hast said, My doctrine is pure, and I am clean in thine eyes.

Proverbs 4:2   (Read all of Proverbs 4)

For I give you good doctrine, forsake ye not my law.

Isaiah 28:9   (Read all of Isaiah 28)

Whom shall he teach knowledge? and whom shall he make to understand doctrine them that are weaned from the milk, and drawn from the breasts.

Isaiah 29:24   (Read all of Isaiah 29)

They also that erred in spirit shall come to understanding, and they that murmured shall learn doctrine.

Jeremiah 10:8   (Read all of Jeremiah 10)

But they are altogether brutish and foolish: the stock is a doctrine of vanities.

Matthew 7:28   (Read all of Matthew 7)

And it came to pass, when Jesus had ended these sayings, the people were astonished at his doctrine:

Matthew 15:9   (Read all of Matthew 15)

But in vain they do worship me, teaching for doctrines the commandments of men.

Matthew 16:12   (Read all of Matthew 16)

Then understood they how that he bade them not beware of the leaven of bread, but of the doctrine of the Pharisees and of the Sadducees.

Matthew 22:33   (Read all of Matthew 22)

And when the multitude heard this, they were astonished at his doctrine.

Mark 1:22   (Read all of Mark 1)

And they were astonished at his doctrine: for he taught them as one that had authority, and not as the scribes.

Mark 1:27   (Read all of Mark 1)

And they were all amazed, insomuch that they questioned among themselves, saying, What thing is this? what new doctrine is this? for with authority commandeth he even the unclean spirits, and they do obey him.

Mark 4:2   (Read all of Mark 4)

And he taught them many things by parables, and said unto them in his doctrine,

Mark 7:7   (Read all of Mark 7)

Howbeit in vain do they worship me, teaching for doctrines the commandments of men.

Mark 11:18   (Read all of Mark 11)

And the scribes and chief priests heard it, and sought how they might destroy him: for they feared him, because all the people was astonished at his doctrine.

Mark 12:38   (Read all of Mark 12)

And he said unto them in his doctrine, Beware of the scribes, which love to go in long clothing, and love salutations in the marketplaces,

Luke 4:32   (Read all of Luke 4)

And they were astonished at his doctrine: for his word was with power.

John 7:16   (Read all of John 7)

Jesus answered them, and said, My doctrine is not mine, but his that sent me.

John 7:17   (Read all of John 7)

If any man will do his will, he shall know of the doctrine, whether it be of God, or whether I speak of myself.

John 18:19   (Read all of John 18)

The high priest then asked Jesus of his disciples, and of his doctrine.

Acts 2:42   (Read all of Acts 2)

And they continued sted fastly in the apostles' doctrine and fellowship, and in breaking of bread, and in prayers.

Acts 5:28   (Read all of Acts 5)

Saying, Did not we straitly command you that ye should not teach in this name? and, behold, ye have filled Jerusalem with your doctrine, and intend to bring this man's blood upon us.

Acts 13:12   (Read all of Acts 13)

Then the deputy, when he saw what was done, believed, being astonished at the doctrine of the Lord.

Acts 17:19   (Read all of Acts 17)

And they took him, and brought him unto Areopagus, saying, May we know what this new doctrine, whereof thou speakest, is?

Romans 6:17   (Read all of Romans 6)

But God be thanked, that ye were the servants of sin, but ye have obeyed from the heart that form of doctrine which was delivered you.

Romans 16:17   (Read all of Romans 16)

Now I beseech you, brethren, mark them which cause divisions and offences contrary to the doctrine which ye have learned; and avoid them.

1 Corinthians 14:6   (Read all of 1 Corinthians 14)

Now, brethren, if I come unto you speaking with tongues, what shall I profit you, except I shall speak to you either by revelation, or by knowledge, or by prophesying, or by doctrine?

1 Corinthians 14:26   (Read all of 1 Corinthians 14)

How is it then, brethren? when ye come together, every one of you hath a psalm, hath a doctrine, hath a tongue, hath a revelation, hath an interpretation. Let all things be done unto edifying.

Ephesians 4:14   (Read all of Ephesians 4)

That we henceforth be no more children, tossed to and fro, and carried about with every wind of doctrine, by the sleight of men, and cunning craftiness, whereby they lie in wait to deceive;

Colossians 2:22   (Read all of Colossians 2)

Which all are to perish with the using;) after the commandments and doctrines of men?

1 Timothy 1:3   (Read all of 1 Timothy 1)

As I besought thee to abide still at Ephesus, when I went into Macedonia, that thou mightest charge some that they teach no other doctrine,

1 Timothy 1:10   (Read all of 1 Timothy 1)

For whoremongers, for them that defile themselves with mankind, for men stealers, for liars, for perjured persons, and if there be any other thing that is contrary to sound doctrine;

1 Timothy 4:1   (Read all of 1 Timothy 4)

Now the Spirit speaketh expressly, that in the latter times some shall depart from the faith, giving heed to seducing spirits, and doctrines of devils;

1 Timothy 4:6   (Read all of 1 Timothy 4)

If thou put the brethren in remembrance of these things, thou shalt be a good minister of Jesus Christ, nourished up in the words of faith and of good doctrine, whereunto thou hast attained.

1 Timothy 4:13   (Read all of 1 Timothy 4)

Till I come, give attendance to reading, to exhortation, to doctrine.

1 Timothy 4:16   (Read all of 1 Timothy 4)

Take heed unto thyself, and unto the doctrine; continue in them: for in doing this thou shalt both save thyself, and them that hear thee.

1 Timothy 5:17   (Read all of 1 Timothy 5)

Let the elders that rule well be counted worthy of double honour, especially they who labour in the word and doctrine.

1 Timothy 6:1   (Read all of 1 Timothy 6)

Let as many servants as are under the yoke count their own masters worthy of all honour, that the name of God and his doctrine be not blasphemed.

1 Timothy 6:3   (Read all of 1 Timothy 6)

If any man teach otherwise, and consent not to wholesome words, even the words of our Lord Jesus Christ, and to the doctrine which is according to godliness;

2 Timothy 3:10   (Read all of 2 Timothy 3)

But thou hast fully known my doctrine, manner of life, purpose, faith, longsuffering, charity, patience,

2 Timothy 3:16   (Read all of 2 Timothy 3)

All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness:

2 Timothy 4:2   (Read all of 2 Timothy 4)

Preach the word; be instant in season, out of season; reprove, rebuke, exhort with all longsuffering and doctrine.

2 Timothy 4:3   (Read all of 2 Timothy 4)

For the time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears;

Titus 1:9   (Read all of Titus 1)

Holding fast the faithful word as he hath been taught, that he may be able by sound doctrine both to exhort and to convince the gainsayers.

Titus 2:1   (Read all of Titus 2)

But speak thou the things which become sound doctrine:

Titus 2:7   (Read all of Titus 2)

In all things shewing thyself a pattern of good works: in doctrine shewing uncorruptness, gravity, sincerity,

Titus 2:10   (Read all of Titus 2)

Not purloining, but shewing all good fidelity; that they may adorn the doctrine of God our Saviour in all things.

Hebrews 6:1   (Read all of Hebrews 6)

Therefore leaving the principles of the doctrine of Christ, let us go on unto perfection; not laying again the foundation of repentance from dead works, and of faith toward God,

Hebrews 6:2   (Read all of Hebrews 6)

Of the doctrine of baptisms, and of laying on of hands, and of resurrection of the dead, and of eternal judgment.

Hebrews 13:9   (Read all of Hebrews 13)

Be not carried about with divers and strange doctrines. For it is a good thing that the heart be established with grace; not with meats, which have not profited them that have been occupied therein.

2 John 1:9   (Read all of 2 John 1)

Whosoever transgresseth, and abideth not in the doctrine of Christ, hath not God. He that abideth in the doctrine of Christ, he hath both the Father and the Son.

2 John 1:10   (Read all of 2 John 1)

If there come any unto you, and bring not this doctrine, receive him not into your house, neither bid him God speed:

Revelation 2:14   (Read all of Revelation 2)

But I have a few things against thee, because thou hast there them that hold the doctrine of Balaam, who taught Balac to cast a stumbling block before the children of Israel, to eat things sacrificed unto idols, and to commit fornication.

Revelation 2:15   (Read all of Revelation 2)

So hast thou also them that hold the doctrine of the Nicolaitans, which thing I hate.

Revelation 2:24   (Read all of Revelation 2)

But unto you I say, and unto the rest in Thyatira, as many as have not this doctrine, and which have not known the depths of Satan, as they speak; I will put upon you none other burden.