Ganker in the making looking for a good Mentor

Hello everyone i'm a brazilian player looking for a ganker mentor i'm not exactly a new player as i played dota for a while now but i kinda of suck at it, and i never really tried to improve until a couple months ago when i really got into playing dota 2. Anyway i'm looking for a mentor who can teach me how to be a good ganker/mid, someone with a good amount of experience in pubs as well as high tier games. Among the heroes i like to play are: Doom, Puck, Tiny, Vengefull Spirit, Tusk and Queen Of Pain. As i said before i'm from Brazil and even though i can read and write in english my speaking/listening skills are really not that good so if there is someone from Brazil that would like to help me or someone who would like to teach a fellow player from another country it'd really be great. My Steam id is themathewzz