First of all, post stuff like this in the music making forum, some very nice people there ;p I got lots of help from them!
Personally I can recommend starting with Fruityloops, userfriendly interface and not that hard to learn. Still pretty powerful though (I still use it). I'd say what matters the most is what you do with the programs, not what programs you use. Other popular programs are Cubase and Reason. FL and Cubase support VST's, Reason doesn't.
Now time for the VST plugins. Softsynths like ReFX Vanguard and Linplug Albino are both must-haves for psytrance. There are also lots of free VST's out on the web - you'll find them by googling ;p
That's a start at least! Good luck