I've just taken (and passed) the first LPI (Linux Professional Institute) exam, 101, which makes me half way to being a certified Linux junior sysadmin :-).
It went fairly well, except that Remarc (warning, silly flash site) made me wait for bloody ages because their software broke, and they had to wait until some other people had finished some other exams before they could update something or other.
The questions are mostly multiple choice, with a few others along the lines of “enter the command which does this and that”. Most of them I found easy, but there were a few obscure questions (unfortunately I can't say what they were because I signed the thing saying I wouldn't), and some where it was hard to tell exactly what they meant, and the answer depended on your interpretation.
I still have to take the 102 exam before I get a certificate, but I'm not particularly bothered about that. I'm mainly doing this because the Linux courses I've helped write and taught are meant to help people pass these exams, and I felt a bit silly telling people how to approach the exams when I'd never taken them myself.
Well, off to the pub soon. I shall be discussing what web-hosting I can provide to someone who might end up as the first paying customer for my little tin-pot web-hosting company.
Oh, almost forgot. I just popped into the Leeds University Library and asked if, as an alumnus, I could get a library card. Turns out I just had to fill in a form and I got a card right there and then, which will last for a year. Didn't cost anything either. It's only for reference, although you can pay to be able to borrow books, but I only want to be able to pop in to look at things occasionally.