First notebook entry: Introducing myself

Nice to meet you.
My name is Kazu.
I wanna study English.
My hobby hobbies are running,watching DVDs and watching baseball games.

Notes:

wanna - It's fine to use wanna in this case, since it's a more casual notebook entry. But formally would be want to
hobby-hobbies - Since you're listing more than one thing, hobby would be plural, so hobbie.

baseball game-games - Reason why it's plural is because I'm assuming that you watch more than one baseball game, so it would be plural.

Doing good! Keep it up ^^