There are so many different ways the Holy Spirit helps us to pray.  Here are eight ways:

1.  He brings to us the Spirit of the Father.  Since the Holy Spirit has the same Spirit of the Father, and since He resides in us, He will convey to us that Spirit, which will help us in prayer. 

Andrew Murray views this Sprit of the Father as a gift given to us by the Father in order that we (His children) may reproduce all the things He brings to us by His Spirit.  He says,

The best gift a good and wise earthly father can bestow on a child is his own spirit.  This is the object of a father in education—to reproduce in his child his own disposition and character.  If the child is to know and understand his father, if he is to enter into all…