Offical Prusa Forum

This is an amazing tool to use when troubleshooting the printers with many answers coming directly from the prusa research team.

Offical Prusa Help Page

This page has all the different printers, schematics, firmwhare downloads, and a bunch of other tools for maintaining and updating the 3D printer

Offical Laser Engraver Site

I know it's not much but this is the place that we bought the lasers and at least gives an idea of what it should do 

Sure Cuts Alot Community Forum

This is an amazing website hosted by US Cutters where many people come and solve problems surrounding sure cuts a lot pro 4