Prayer is very simply you talking to God. The advantages, blessings, and potential of prayer are vast. The Bible has much instruction about prayer, as well as examples of prayer. Here are two simple lessons about prayer...
Psalm 62:8 Trust in him at all times; ye people, pour out your heart before him: God is a refuge for us. Selah.
Notice the phrase "pour out your heart before him". Whatever is on your heart, you can pour it out to the Lord in prayer. It doesn't have to be pretty, it just needs to be honest, thorough, and humble. The Lord will be your best friend if you let Him.
The second lesson is from Psalm 55:22, which says "Cast thy burden upon the LORD, and he shall sustain thee: he shall never suffer the righteous to be moved."
Whatever burdens you have, cast them off of your shoulders and on to the Lord through prayer. We can't bear all of our burdens, but Jesus can. Joseph Scriven said it well when he wrote the hymn, What a Friend We Have in Jesus. It was written in the 1800's, but these timeless truths are just as relevant today as they were then.
What a friend we have in Jesus,
All our sins and griefs to bear!
What a privilege to carry
Everything to God in prayer!
O what peace we often forfeit,
O what needless pain we bear,
All because we do not carry
Everything to God in prayer.
Discipleship Lesson 6 - Prayer