Well, maybe not everything, but here are all of Jesus' major teachings on prayer:
If you abide in Me, and My words abide in you, ask whatever you wish, and it will be done for you
It happened that while Jesus was praying in a certain place, after He had finished, one of His disciples said to Him, "Lord, teach us to pray just as John also taught his disciples." And He said to them, "When you pray, say: 'Father, hallowed be Your name. Your kingdom come. Give us each day our daily bread. And forgive us our sins, For we ourselves also forgive everyone who is indebted to us. And lead us not into temptation.'" Then He said to them, "Suppose one of you has a friend, and goes to him at midnight and says to him, 'Friend, lend me three loaves; for a friend of mine has come to me from a journey, and I have nothing to set before him'; and from inside he answers and says, 'Do not bother me; the door has already been shut and my children and I are in bed; I cannot get up and give you anything.' I tell you, even though he will not get up and give him anything because he is his friend, yet because of his persistence he will get up and give him as much as he needs. So I say to you, ask, and it will be given to you; seek, and you will find; knock, and it will be opened to you. For everyone who asks, receives; and he who seeks, finds; and to him who knocks, it will be opened. Now suppose one of you fathers is asked by his son for a fish; he will not give him a snake instead of a fish, will he? Or if he is asked for an egg, he will not give him a scorpion, will he? If you then, being evil, know how to give good gifts to your children, how much more will your heavenly Father give the Holy Spirit to those who ask Him?"
When you pray, you are not to be like the hypocrites; for they love to stand and pray in the synagogues and on the street corners so that they may be seen by men. Truly I say to you, they have their reward in full. But you, when you pray, go into your inner room, close your door and pray to your Father who is in secret, and your Father who sees what is done in secret will reward you. And when you are praying, do not use meaningless repetition as the Gentiles do, for they suppose that they will be heard for their many words. So do not be like them; for your Father knows what you need before you ask Him. Pray, then, in this way: 'Our Father who is in heaven, Hallowed be Your name. Your kingdom come. Your will be done, On earth as it is in heaven. Give us this day our daily bread. And forgive us our debts, as we also have forgiven our debtors. And do not lead us into temptation, but deliver us from evil.
"Have faith in God. Truly I say to you, whoever says to this mountain, 'Be taken up and cast into the sea,' and does not doubt in his heart, but believes that what he says is going to happen, it will be granted him. Therefore I say to you, all things for which you pray and ask, believe that you have received them, and they will be granted you. Whenever you stand praying, forgive, if you have anything against anyone, so that your Father who is in heaven will also forgive you your transgressions. "But if you do not forgive, neither will your Father who is in heaven forgive your transgressions."
"In a certain city there was a judge who did not fear God and did not respect man. There was a widow in that city, and she kept coming to him, saying, 'Give me legal protection from my opponent.' For a while he was unwilling; but afterward he said to himself, 'Even though I do not fear God nor respect man, yet because this widow bothers me, I will give her legal protection, otherwise by continually coming she will wear me out.'" And the Lord said, "Hear what the unrighteous judge said; now, will not God bring about justice for His elect who cry to Him day and night, and will He delay long over them? I tell you that He will bring about justice for them quickly. However, when the Son of Man comes, will He find faith on the earth?"
Two men went up into the temple to pray, one a Pharisee and the other a tax collector. The Pharisee stood and was praying this to himself: 'God, I thank You that I am not like other people: swindlers, unjust, adulterers, or even like this tax collector. I fast twice a week; I pay tithes of all that I get.' But the tax collector, standing some distance away, was even unwilling to lift up his eyes to heaven, but was beating his breast, saying, 'God, be merciful to me, the sinner!' I tell you, this man went to his house justified rather than the other; for everyone who exalts himself will be humbled, but he who humbles himself will be exalted."
Beware of the scribes who like to walk around in long robes, and like respectful greetings in the market places, and chief seats in the synagogues and places of honor at banquets, who devour widows' houses, and for appearance's sake offer long prayers; these will receive greater condemnation."
But I say to you, love your enemies and pray for those who persecute you, so that you may be sons of your Father who is in heaven; for He causes His sun to rise on the evil and the good, and sends rain on the righteous and the unrighteous.
Then Jesus came with them to a place called
Gethsemane, and said to His
disciples, "Sit here while I go over there and pray." And He took with Him Peter and the two sons of
Zebedee, and began to be grieved and distressed. Then He said to them, "My
soul is deeply grieved, to the point of death; remain here and keep watch with
Me." And He went a little beyond them,
and fell on His face and prayed,
saying, "My Father, if it is possible, let this cup pass from Me; yet not
as I will, but as You will." And He came to the disciples and found them
sleeping, and said to Peter, "So, you men could not keep watch with Me for one hour? Keep watching and
praying that you may not enter
into temptation; the spirit is willing, but the flesh is weak."
Truly, truly, I say to you, if you ask the Father for anything in My name, He will give it to you. Until now you have asked for nothing in My name; ask and you will receive, so that your joy may be made full. These things I have spoken to you in figurative language; an hour is coming when I will no longer speak to you in figurative language, but will tell you plainly of the Father. In that day you will ask in My name, and I do not say to you that I will request of the Father on your behalf; for the Father Himself loves you, because you have loved Me and have believed that I came forth from the Father.