Hi!
Seems like there's a post on this subject about every week or two. If you search the forums you'll find a lot of other threads, also you can always ask anyone who posts a screenshot which software they use, I'm sure they'd be glad to help.
But for starters, read this thread:
http://www.mfilos.com/2012/01/guide-making-workbench-prettier-using.html(I'd skip Birdie if you're on an ECS machine)
Also install the Peter K icon library:
http://aminet.net/package/util/libs/IconLib_46.4Also "This Old Workbench" has some good tips, although it's a bit dated, now:
http://www.amigau.com/amigarealm/thisoldworkbench/html/contents.htmlAlso there's the question of whether you want to push toward 3.9 and GlowIcons, or another of the more "modern" icon sets, or stick with something more classic like MagicWB, etc. (this would depend on your hardware specs)
Am sure other will chime in with more, since everyone's Workbench is a little different, and everyone has their own customization preferences which they think are the best, lol.
But yeah, look at screenshots and ask questions is your easiest way to get started.