About proxies

[Hi im pleb]

Hey so I'm pretty new to botting and I had this question: a) what exactly do proxies do? b) where can I buy them (links)?

[Simplistic]

They mask your IP

[Birdaking]

http://osbot.org/forum/topic/92117-3x-socks5-100-private-proxies-for-sale-25m-ea/

I get mine from realist, currently using 3 and not had any issues so far