I'm very thin and weigh 150lbs and my .308's recoil is not excessive. Doesn't hold a candle to the recoil of a .30-06 or even a .30-30.

Maybe? But give it a try, you prolly know someone with a .308/7.62x51? I bet you will be surprised if you hold it tight & go with the recoil. Either way go with the round you feel comfortable and accurate with heartlandnewbie88!

The .243 will work fine for whitetail. And it's a great choice if you're adding coyote as well. Can't help you on the needing a mentor thing. I would suggest possibly looking into some hunting clubs, outdoor clubs, etc and maybe through that you can meet people. Also, if you are on Facebook, look up groups in your area.... As an example... The group "PA Black Bear hunting" has over 3,000 members. And I have met people to hunt with through that. Bear hunting is a little different, in PA allot of people put on big drives so they are looking for people to come out and hunt, but a group like that may open doors for you.
-Jake

Thanx everyone... i really appreciate your help. Im taking everything you say and storing it. I'm here to learn

Thank you bud, hunting deer is a gift, get a GOOD mentor in your area.