For somebody starting out, I recommend the following, which is what I used when I was starting out:
TACX truing stand
Minoura dishing tool
Avenir spoke wrench set of 3 (looks just like the Park set, only cheaper)

Minimum investment. Together with the junk wheels mentioned above, it's all you need to try wheel work out.

Next item will be the Park tension meter TM-1, unless you can do it by ear (twangin' on the spokes like a git-tar).