It really depends on your experience in my IMHO - really, if you have spent some time on snow/ice/rope travel and just needs some ins/outs of crevasse rescue, then the short course would work. If you are a poor man - then a copy of the " Freedom of the Hills" may be a good value. Then you take some buddies out and practice, practice - as they say in the above, seriously -- the only thing that really works is good glacier travel, and don't fall in.