Sex is good. That's all I'm going to say about that.
A really good position is where your laying down, and instead of her laying faced towards you, get inside of her while she's laying her back towards you. So like missionary except she's backwards. You'll be able to lick her boobies, use your fingers, ect...
You can also manipulate this position a lot into other fun things.
Stimulate the clitoris while your inside her. Almost any postition would do for this. This is the best pleasure for any woman. Or if you don't like using your hands get a little vibrator like the silver bullet and use that instead.