The book of 100 Sex Positions (no nudity) download at link below
We are not scholars, but we believe sex is a gift of God, given to husband and wife. Sex should not be anal, nor for it to take place during menstruation, or up to 40 days after giving birth. For more details or anything questionable please consult a Muslim scholar, not this site.
The general rule in Islam is that unless anything is forbidden it is permitted. Some things although not sinful may be disliked.