I need some good rap and R&B beats to record my demo but I dont want to spend alot of money but still want good quality music. Where can I get these from?????

I really want to start producing hip hop, but I have no equipment whatsoever and I thought I better get a drum machine first. Kepp in mind that I am only 16 and don’t have tons of money to spend, I just wanna get a good, reliable drum machine that is not rediculously expensive.

Like I just heard a really good Lil Wayne rap, over the beat/ sound of Michelle Branch’s A Thousand Miles.

I hope this makes sense.
Any and all suggestions are appreatiated.

Actually I liked to make some covers so…
I really wonder where can I get some famous beats.
I sthere any websites or anyway?

What part of my legs should I be exerting the most energy from? What is key to doing this accurately?