Its a funny subject is lockpicking, theres probably more myth than truth written about it. I'm not an expert at it but have picked a number of them, all quite legally. Honest. :) I dont follow the usual published advice, which seems more bragado than anything, as it takes some skill to use with any serious success rate, and there are easier ways. These are less glamorous, and no-one would make any money or ego-boosting out of telling people how..
The simplest foolproof way to open a euro is to drill it. A 5mm bit should open it in a minute or so. Its also worth trying any and all keys youve got, you might get lucky. I doubt its worth buying a picking set, not unless you want to take a significant interest in the subject.
NT