Hi and welcome to the Pork
My personal advice would be to say... suggest things with your gf. it could be a great time and not so hard to get started if you just start the conversation off right. I think women are much more willing to try things than they are given credit. Maybe watch some porn together with a scenario in it that you'd enjoy and tell her how much it is turning you on. or suggest something simple like being blindfolded and then take steps from there.
In the meantime chat here and get ideas and suggestions. Hope you have fun
~We accept the love we think we deserve~
~What other people say about me is none of my business~