Don't be embarrassed to ask questions when you don't understand something about the Christian life; after all, God wants you to come to know Him more and more each day. Jesus' disciples repeatedly asked for His help, and so should we. On one occasion they said, "Lord, teach us to pray" (Luke 11:1).
Yes, God hears our prayers on all occasions, whether we're praying out loud or praying silently in our hearts and minds. After all, He knows all about us and knows what is going on inside us–both good and bad. The Bible says that God "judges the thoughts and attitudes of the heart" (Hebrews 4:12). The Bible also says, "The Lord detests the thoughts of the wicked, but those of the pure are pleasing to him" (Proverbs 15:26).
God even hears our prayers when we can't even put them into words–times, for example, when our hearts are too burdened or confused even to speak. The Bible says, "the Spirit helps us in our weakness. We do not know what we ought to pray for, but the Spirit himself intercedes for us with groans that words cannot express" (Romans 8:26).
One of God's greatest gifts to us is the privilege of prayer–a privilege that is possible because of what Jesus did for us on the cross. Thank God for the privilege of prayer and learn daily to "Cast all your anxiety on him because he cares for you" (1 Peter 5:7).