LESBIAN ADVICE! or anyone with experience!

Hi guys! I am a highly inexperienced young lez, fresh outta the closet, just embarking on what may very well become my first real relationship with a lovely lady. Here's the problem - I'm scared I'll be terrible in bed! Yes I have experience with my own vag but I can't even really get myself to orgasm, and all lady parts are different! If anyone could give me some tips or advice (just in case things head that direction with this girl down the road) that'd be swell!