Wanna start playing basketball

Title says it all. For the past few weeks I've been just dribbling a bit and trying to shoot against my wall outside. But I wanna get better and get the basics done. I wanna practice my shots on a hoop but unfortunately I have no hoop and there is no basketball court anywhere near my house :/ What are some sort of basic exercises I should focus on? And how can I practice my shot with no hoop at home? I'm also planning on doing workout anytime soon, what muscles should I focus on or what kind of exercises? Hope someone can help me out a bit :) Thanks

Extras for the workout: I'm almost 19, 1m80 (5'9), quite skinny (57 kgs) so my body is not that athletic.