A standalone version of Bungie's Forge FAQ v2.0, for easy access. Includes the Forge Companion (available tools) and as a bonus, a promotional page.
A nicely done set of GIFs covering all the solo levels in M1. (Yes, it's been done before... but I don't think any of the originals are in the Archives... and these are pretty complete, with secret areas, save terms, and rechargers.) Worth a look if you're working your way through M1 again (or for the first time...)