Anyone has done the TP 642-185 ?
Is the book and SRND guides enough ?
Kevin's book is a must for sure, book includes part of SRND, so yes, both are good materials.
There are couple of Traning materials in Cisco cert web page (Video 101 and Troubleshooting TelePresence)
I suggest you checking Hardware instalaltion docs for all our units and the RRA training.