Starting Points
The back is always a good place to start, then the shoulders,, neck, arms, and work your way from the feet, up the legs to the upper thighs with you hands on the inside and outside of the thigh. If you have long finger nails you can also do wonders on their scalp as these two centers the head and genitals are two more "personal" areas that when touched and explored can help get your partner into the mood, but as you two become more comfortable you will find they may ask for more direct action. Once you are able to pet between your partners legs, kissing and fingering can be worked in as your partner is ok with it (or does not object) so work with confidence, and if you don't have it, fake it till you make it.
From here you can flip your partner over their body in much the same way as with their back, remember the nipples of men and women are very sensitive and kissing, nibbling, and licking the underside of the breast and nipples can be very arousing. Men naturally are easier to give a chest massage to then a women, but you can use two hands and encompass one of her breasts and squeeze from the base to the tip, the larger her breasts are, the more pressure you may need to apply, but do what is comfortable for her. Suckling will also allow you to free up one hand to play with your lovers sensitive spots as you move from massage, to sexual massage and foreplay.
How to use your hands
When giving a massage use should your finger tips softly on your partners soft and sensitive spots applying more pleasure if needed for deep tissue massage.
When working on large muscles the thumb and open palm will often work best, but until you know your partner better, start softly and use more pressure and force as you find she wants or needs.
As you give more massages you will better understand what a body needs and can fine tune further from there as your lover requires. As you surprise your partner with fun bites, scratches, licks, and such you will be remembered fondly as one of their best or better lovers!