1. Maya SP1 update
Having any weird issues with Maya functionality?
Download and update your Maya v8.5 and/or 2008 with the Service Pack 1 update.
This, above all, is recommended as there are TONS of fixes for 8.5 and 2008

2. Bonus Tools
3. Level Tools
4. Newest Fbx plugin
For importing and exporting Fbx content to and from Maya.
(Those of us using Fusion and Flame NEED this

....and TONS more resources are always available.
https://area.autodesk.com/