Men can and do give women orgasms all the time. Allow me to give you an anatomy lesson. I have been a nurse 15 years so I feel I am qualified............In the womb as the baby developes the genitalia of both male and females starts to form and both the penis and the clitoris is made up of the same erectile tissue. As a boy baby grows his tissue begins to elongate and form a penis. The little girl baby does not naturally. So picture this. All a clitoris is, is a minature penis. Well its like the head of a penis. The clitoris has the same nerve endings as does the head of your shaft. Most women cannot have an orgasm without clitoral stimuli. Be it manually or orally. The clitoris is like a flower in that it is sheathed inside 4 petals, the outer 2 being called the labia majora, the inner two are the labia minora. That means you have to open this flower and then once you find the sensitive bud you need to treat it like you want a women to treat your penis head. Lick on it, take it between your lips and suck on it. Some women like more suction pressure than others, you need only to ask. Of course you do not just have to provide oral pleasure, while your licking and sucking etc., insert your finger in her vaginal canal ( once she is wet ) and curl your finger upwards toward her pubic bone. This is where the g-spot is. Alot of women love this, some say it makes them want to pee. Go slow and be gentle and ask her what feels good but do it in a soft whispery romantic voice. We women are more sensitive creature and like to be treated more tenderly. A women can also have an orgasm during penetration if you will manually massage her clitoris or have her do it. You can also grind your pelvis against her clitoris while you are thrusting in and out to stimulate her clitoris and help her orgasm. We women love sex when we are with a partner who takes the time to get to know us and learn how to pleasure us. If you satisfy your lady I can promise she will want sex more frequently and she will also want to do things you with you and to you that she might otherwise find distasteful because she wants to give you as much pleasure as you are giving her ie: licking/sucking your taint (that sensitive patch of skin behind your testicals that is oh so close to no mans land.)
Good luck and remember this, practice makes perfect. Don't be shy, ask and believe me you will be forever thankful for what your female partner can teach you.