Becoming Orgasmic by Julie Heiman – A good book for spelling out how to discover your own sexuality and to overcome the fear of not being able to orgasm.
Loversguide.com to Positions - Positions explained with options for challenging factors – for example size. A good site with lots to explore.
Sexual Health Resource.com - Robust information on position fundamentals and methods to personalize the basics.
Birth Control Comparison Chart.com - A straightforward, excellent resource that lists all forms, which ones are prescribed,over-the-counter and a fact sheet for each.