Some links we think are worth visiting
Mother of all 3D printing websites. Focus is on building your own 3D printer, but lots of general info as well. Many commercial 3D printers have their roots in the RepRap project.
https://www.simplify3d.com/support/print-quality-troubleshooting/
A terrific visual guide to most common problems with 3D printing. While this guide is oriented toward their (paid) slicer, the principles apply to any slicing software.
The most popular community site for sharing 3D printable models. Operated by Makerbot.
An alternative to thingiverse operated by Ultimaker.
https://www.youtube.com/user/ThomasSanladerer
A Youtube channel with loads of 3D printer information and reviews.