Like anything in life, you generally only get out of something what you are willing to put in to it.
Poker is one of those amazing things where someone can play for fun and have a lot of fun doing it. He doesn't need to study to enjoy it. Take many home games for example, where friends get together to enjoy each other and play some cards.
But if you want to get better and want to be a winning poker player, then you must invest some time to do so. Practice is great, but will only get you so far, if you do not understand the math and why things are happening the way they are happening.
Have fun and study is the best poker advice. If you don't enjoy it, don't do it.
Good luck and God bless.