try a cork they are easy and more natural IMO. I first learned them by accident by just setting a 9 really hard. You just go with the jump. Bio's you have to actively lean forward and i feel like it is much more difficult.
If you wanna do a "actual flip" I think what you want to try is a misty, cause a bio is pretty much a forward cork. but I can't help you on how to do mistys, but it seems pretty straight forward, like a frontflip with a spin.