Wil5on, sky boxes (especially) are easy to make, textures are another matter.
I suppose, if you wanted, I could lend you a hand, all you really need to make an effective skybox is (especially for your school map) a panaramic pictures of real areas. (that's the easiest way) and then compilate them together within something like Photoshop. (obviously saving them seperately, but to get them to line up just right, it's a good idea).
I know a texture site, I got it from Vash:
Jbdubbs
However, be forwarned, most of the textures in those wads are over the regulation size (256x256) of HL. Also, some of them have porn, even if its not in the title . . . but there are a few good ones (I remember I found a nice one there once, but I can't remember the exact name).
Also, talk to Orph, he said he had a compilation of over 2Gb worth of wads, so, he'd be a good resource as well (All wrinkled and used up like always :biggrin: lol just kidding, Orph)
Anyway, there's many other options, like taking your own pictures for textures (espeically if you're recreating a building).
I believe Cass put up a link to Phongs site which has some Photoshop tutorials on it (his rock face tutorial is pretty good, not incredible, but it's pretty good).
I'll edit this post when I find the url.
