You'll find quite a few people on the boards who manage without medication. I am not one of them; I have found my bipolar is too severe at the moment to function without medication. However like I said many do manage without meds.

As for therapy, I have found DBT (dialectical behavioral therapy) to be the most helpful. Start with typing DBT into google - I forget the actual website but you should find it pretty quick. You can also pick up the DBT workbook for bipolar. I have found it most helpful, especially in times of great distress.

Good luck to you! I hope it works out for you.