Thank you for your questions -- and I hope you'll never lose your interest in God and what He wants you to do with your life. The most important decision any person will ever make is the decision to follow Jesus and let Him guide them through life.
The Bible tells us that God isn't like us; He doesn't have a body, nor is He made of flesh and bones. Instead, He is a spiritual being -- and because He is a spirit, we can't see Him with our physical eyes. We can see the results of what He does in the world around us -- but we can't see Him. This is why the Bible says that "No one has ever seen God" (1 John 4:12).
The Bible, however, tells us something very important: We can know what God is like -- because at one point in time He came down from heaven and became a man. That man was Jesus Christ, who was both fully God and fully man. Do you want to know what God is like? Look at Jesus as He is revealed in the pages of the New Testament, because He was God in human flesh. The Bible says, "No one has ever seen God, but God the One and Only, who is at the Father's side, has made him known" (John 1:18).
But the Bible tells us something else about God: He loves us and wants us to know Him personally as our heavenly father. This can happen as we ask Him to come to live within us by His Spirit. Why not tell Him you want to become His follower -- today, and forever?