Zenwalk is a very good distro, I either use that or Ubuntu. Plain old slackware is a great one to start off with - that's what I started with. But I liked Zenwalk and Ubuntu because they were just simple to get started with. Ubuntu I would say has the advantage (automatix makes everything quite simple to set up). But Zenwalk has always been in my top 3. I highly recommend it to anyone wishing to try a new distribution.