Ultra super noob just got into Beta, thinking of streaming my attempts of learning to play.

My friend just shot me a beta invite for Dota2 and the only experience I have in MOBA games at all is making it to level 20ish in LoL. I started up the game a little while ago to look around and tried spectating, then started a bot game and realized I was totally overwhelmed.

I'm thinking about streaming tonight around 1030p pacific time and letting people watch me ruin everyone's good time while I be the worst Dota player in history if anyone is interested, but mostly I'm looking for advice. I'll be spending the next few hours looking through wiki's, reddit posts, and any other information I can get my hands on but if anyone has any pointers I'd be glad to hear them.

I do understand the concept of last hitting and tried my best to do so in LoL but don't know how different the mechanics may be in Dota 2, from what I saw in watching other games it seems towers aren't nearly as big of a threat, or maybe that was because the game was already mid game.

Anyways hopefully I'll get some advice, thanks everyone!