I don't even remember the first time I tried. I believe I've done it all my life! But that's fairly normal, a lot of babies do it, but their parents tell them off for it, so then they rediscover it as they reach puberty, but feel it's bad. It is not bad, it's a very healthy thing to do.
Yes some women do 'ejaculate' or 'squirt', I don't.
No I haven't.
I lay on my belly, get very comfortable and relaxed and fantasise. I also draw it out a long time. It's very relaxing.