My gut instinct is to avoid this organisation until you have spoken to someone who has worked with them. You hear so many scare stories of people forced into drugs-running, prostitution, dangerous etc these days. I'm not saying that this company is one of them. however, I've never heard of them before, and I suspect no-one on this board has either.

If you go to 1 of the many Irish bars in Madrid, you should be able to pick up some free-mags (in English). There are often jobs advertised there. Many are looking for interns (ie unpaid skivvys) but don't necessarily rule this out (especially if you have accommodation provided by your family). It may give you time to learn the language and build up contacts etc.
When you know the language (and it will take longer than you think) you can then start looking for jobs on Spanish websites (eg infojobs and segundamano

Good Luck