New player (only played practice games) and want to learn - Love Tide Hunter and want to learn him to a point where I can play with friends (They all have like 3k hours) - I know I wont be at there level but I want to be able to hold my own. I know I should also pick a back-up encase it gets banned

I understand last hitting and basic concepts but other then that (Role, items, game-plan, etc) as completely foreign to me - Have thought about even getting some coaching

Any Advice/Tips would be greatly appreciated

ADDED: Thanks to all that posted, have been following some advice and games have felt much better. Just gotta get better at Last hit and XP. Seems like I fall behind a bit when leveling