FME online documentation means you don't need the software to be installed on your PC to view the software documentation
FMEpedia is Safe Software’s online FME 'wiki', with loads of how-to’s and sample downloads, should be your first port of call when stuck
FMEchannel is Safe Software’s YouTube presence showing new functionality and how-to's, produced by users and Safe Software
FMEGuru is Safe Software's YouTube presence showing even more advanced how-to's!
FME Webinars are free online webinars focused on solving various data challenges, produced by Safe Software
FMETalk is a user driven Google Groups support list where you can post specific problems to the user community. This is a very active group with turnaround anywhere between a few hours to a few days. Lots of good searchable archives here too.
Training links are for both online and scheduled courses. Critchlow can also provide some capability in this area as well
Other Reference Guides
FME Evangelist is targeted toward the advanced user. This forum provides in-depth knowledge around a particular capability or functionality of FME. There are also some great tips and tricks featured in the archive area
Spatial Industry blog produced by Safe Software
FME Newsletter is quarterly distribution called the “Safe Insider”