I need help finding tutorials for...

I am making a killer ZDooM TC, and i was wondering, does anyone have any tutorials dealing with new weapons, items, grafix, sound, music (how do i import .IT files into a wad using Wintex?), etc etc. I am going to change everything, adding new stuff as well. I hope to get it playing in hubs like Hexen and with 50 or so levels. Anyone got any tutorials or know where i can get them? Thanx.

somewhere here at the forum i've posted about how to import it's and mp3's, however I'm using nwt pro to do that, if you insist in using wintex someone posted here too about a workaround fooling wintex to import the mp3 (and therefor it's too) as a colormap.lmp or something, search and you will find :o)