I see that Marnia has posted a link to the AYP forum under the Wisdom section: http://www.reuniting.info/wisdom/tantra_women_orgasm
I'm happy to find that and would just like to put in a word for that site. It's full of spiritual knowledge and I found it some 3 years ago - not having any former experience of yoga or spirituality whatsoever. I got enormous help to understand what was happening to me during my first awakenings to a new world of inner space... so don't hesitate to check it out because of the name of the site! =)
Yogani - an anonymous spiritual teacher who shares his knowledge FOR FREE through the web site -is totally on the same line as promoted here on this great site! His lessons on tantra contains both spiritual background info and practical advice on how to reach higher levels of ecstacy through pre-orgasmic sex. Please, check the site out for yourselves:
In my experience, daily deep meditation has increased the speed of my deeper understandings and ever increasing ecstacy during love making. I would not have understood so much about the functionings of the sexual energy without the inner stillness cultivated by meditation. It's like... it's yin and yang that's going to get married inside. And through meditation Yang/Shiva (the male, the consciousness) is cultivated, and through physical love making Yin/Shakti (the female, the life force, kundalini) is cultivated - the sexual energy is transformed to higher and higher levels when not spilled out through orgasm.
So combining lovemaking without orgasm with daily deep meditation is working from two sides, bringing much faster results! I recommend the site from the bottom of my heart.
If you start having lots of new inner sensations of tingeling, buzzing, ringing in the ears, feelings of spacyness, ecstacy, dizziness etc, you'll have all the answers what that is about on that site! It's spirit waking up inside and deep transformation occurring!
(Yes, I write as emc on that forum as well.)