Ludermor,
The course might well turn out to be the best time and money you have ever spent. It's easy to read articles on the net, but dealing with revenue staff who themselves do not fully understand tax matters can be a pain. I've queued for hours outside the Dublin office and having eventually spoke with a customer service person the wrong certificate was sent out to me. So three subsequent telephones and two further wrong certificates later!!!! grrrrrrrrrrrrrrrrr might cause me to believe that I'm wrong - but I'm not.
Justsally