In need of advice!

I am in desperate need of some advice. Zoe has started her terrible twos really early. She will just scream if i try to give her a bath or get her dressed, or if I dont let her watch tv or do whatever it is that she wants to do. So i have been putting her in her bedroom to see if she will calm down but she has figured out how to open the door and so she gets out. I have spent the last 2 hours to try to get her to stop screaming. I am about ready to pull my hair out. Is there anything else i can try, cause she doesn't stay on time out either. Am I doing something wrong? Please let me know of anything that you have tried so i can try it myself.