Good point ... but what language with any degree of mind share <i>doesn't</i> have great on-line resources today?  All the ones that I've used after the late '70s are well covered as far as I can tell.<p>ADDED: about the only thing I've found that's subpar is x86-64 assembly, and I assume that's because x86 is well covered, x86-64 is quite new and isn't a big jump from it, and not all that many people are interested in it.