Resources for suspension setup and tuning?
General for fork and shock:


pinkbike Tech Tuesday - Suspension Setup part 1
pinkbike Tech Tuesday - Suspension Setup part 2
pinkbike Tech Tuesday - Suspension Setup part 3
pinkbike Tech Tuesday - Suspension Setup part 4


troubleshooting a shocks behavior with the dials (it's from cane creek but applies to anything):


https://www.canecreek.com/resources/docs/DB_Quick-tune_Sheet.pdf