I did a great nightcourse in Ballyfermot Senior College: 'Print Journalism'. It taught me all the basic skills and gave me a good idea of what the life of a freelancer entails. We also got to use Quark Xpress to edit, which will stand to me.
That said, it gave me a good idea that the career is not for me! I've had stuff published before, mainly arts-related reviews and interviews, and while I'm sure I'll do it as a hobby/money-spinner in the future, being a full-time freelancer is not for me. Its a realy uphill struggle and very difficult to make money out of. There is very little stability and it is quite anti-social as you do alot of work from home. As a freelancer you wouldn't have an office so you'd have to think about things like phonebills, computers, recording equipment, travel expenses etc.
On the upside it is a very interesting and challenging career and you would not be bored. If you like working on your own and are self-motivated then it will be easier. I got one or two books when I researched into it: 'The Freelance Writer's Handbook' - Andrew Crofts and You can Write for Magazines- Greg Daugherty. They were reccomended by the lecturer and really gave the an idea of the reality of the career. Both are available on Amazon. If you have any more q's I'll help if I can. I think I wrote down somewhere what price you should get for articles etc. I'll post if I can dig it out.