Hmmm...this could become a problem.Whatever you do,don't try to ease it with drugs.Ignore his yelling,try to leave the house when he's drinking(hang out w/ friends?)and get some people to help you with the tree.If not,start digging the **** outta that tree.If its old,good luck. >.> Next,try to impress him.Do stuff you wouldn't normally do and hope that helps.Try not to play so much in front of him.Don't go all "teenager" on him and start annoying the heck out of him.Try to ease up and get better grades.If you have a cool head,it won't seem like such a problem.Next,do you have a GF? It's easier to have a girl to talk to. Good luck,and I hope this helped!