FreeNAS 11.0-U4 manual    (pdf)   (epub)
generated on 09/27/17

FreeNAS 11.0 manual    (pdf)   (epub)
generated on 06/14/17

FreeNAS 9.10.2-U2 manual
   (pdf)   (epub)

generated on 03/04/17

FreeNAS 9.10.2-U1 manual
   (pdf)   (epub)

generated on 01/14/17

FreeNAS 9.10.1-U3 manual    (pdf)   (epub)
generated on 11/07/16

FreeNAS 9.10 manual
   (pdf)   (epub)

generated on 07/16/16

FreeNAS 9.3 manual   (pdf)   (epub)
generated on 02/26/16

I'll keep the 9.10 file online for the forseeable future.  Unfortunately I overwrote the matching epub version for 9.10.  If you'd like a copy from June 6th, send a PM to gpsguy in the FreeNAS forums.

On March 22nd, 2016 iXsystems released FreeNAS 9.10 as an upgrade from FreeNAS 9.3.  The latter has now been placed in maintenance mode.