Help! I don't know how to!

Okay, I'm 20 and I'm currently with my second sexual partner/boyfriend and he's amazing, but I don't have any idea how to help myself when I'm alone or in the mood. 
I know to finger yourself, but that's literally it. And I've tried dildos, but I don't know how to get myself wet or to enjoy it without just getting off, almost like a chore. 
My clit has always been super sensitive, as in, if I touch it, I jump almost 5 feet off the ground, but does that have something to do with it? 
And I've always been a bigger woman. And I was wondering if that has any effect. 
Help! I want to enjoy myself and not hate every second of it! 

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