use it the same for pu'er as you would for any other tea...
1 heat gaiwan with hot water, pour out
2 put in pu'er
3 rinse pu'er (10-20 seconds), pour out
4 steep pu'er, pour into pitcher/cups
5 repeat step 4...
in sichuan and a few other places they drink green tea directly from the gaiwan, but this would overbrew most any tea including pu'er unless very little leaf was used.
[i'm in shanghai throwing all my money at teaware. So far I bought 8 gaiwans...!]