Jeremy congrats on making the plunge!
Bri24 has offered some excellent advice that I would follow to the letter.
It doesn't matter if you are 11 or 111 years old, the hunter education program will give you what you need to start 'acquiring' gear. The class focuses on ethics, firearms safety, and animal identification among other things.
As far as what you need to buy, that will depend on what you choose to hunt. Personally I would wait to ask your question until after you have passed hunter ed and are still interested in hunting. (not that you wouldn't be).
There is really very little you will need to get started and with what you learn in Hunter Ed, you will best be able to determine what you need now and what you can't wait for.
Here is the link to ODFW's website with Hunter Ed info:
http://www.dfw.state.or.us/outdoor_skills/
Good luck and let us know how it goes.