Hi Pinooch,
I'm still on the DBP demo as well and ordered DBP, same as you, coming from a C++/Delphi background. I'm hooked on DBP !
As far as editors are concerned, i found Worldcraft Hammer eddition with zoner's compile tools to work best with DBP.
note:When in Worldcraft, don't load the HalfLife .fdg file or you levels will come out black.
DBP dosen't seem to like the light definitions from that file.
you can create your own .fdg with the correct definitions:
Class _light _intensity ...etc
next, either put the textures you used in your map in a wad file. you can use Wally to create your wads, you leave your textures in the same directory as your exe.
you can also use Set Dir and put your textures in that dir i beleive.
Next part i haven't been able to get going yet, but i'm working on it

use pakscape to create pk3 files that will hold your bsp and wad file.
you can get most of the files i mentionned above from this link:
http://www.valve-erc.com/content/?page=utilities
Hope this helps a bit,
OrcishBlue
ps: if you are still using the DBPdemo, you will get texture streching on your walls..etc, but the full final version patched to 3.1 is working fine. Raven and others have tested my levels and they where fine with DPB 3.1
The Demo is not as up to date.
k, i'm done babbling