pro tools is good software. if you're simply "editing" shows you record for archive or torrent, audacity is all you need, or all i've needed. if you had a really old crappy recording that needs sprucing up, there are plugins that come with this version one could use for decent repair/effect/s. as for workflow, it's as hard or easy as your ability to learn its specifics.
depends what your plan is. if you want to learn professional editing for film, docs, music (like actual records), pt is not a bad thing to know. it's still pretty ubiquitous despite all of the complaints about its price, compatibility with every os x upgrade, etc.
reaper is a very good option. i've been following them ever since an old friend of mine started working on that project.. in the reaper forums he goes by "schwa" -- if i remember correctly -- and the developers do stay on top of consumer's questions.