Usually you just:
- Clear Cache,
- Clear Dalvik Cache
- Format /system, (DON'T FORMAT DATA), (if using CWMA, format /system is under "mounts and storage"....if not using CWMA, or if not comfortable with that option, just flash the Debug .zip file in the 1st post).
- Flash ROM
- Flash gapps
When the ROM update includes a version update, (2.3.2 to 2.3.3, for example), then most say you should format data too....although last time I seem to have gotten away without doing that...
so like when a update occurs but doesn't say its making that big of a step, I should just flash the latest update of the rom and done?