Update README.md

Author: rosedahl

README.md

@@ -7,7 +7,7 @@ As always is the case with documentation, it usually needs some updates.  So fee
 base with us on the mailing lists.
 
 It is recommended that you first read the [Hostboot Programmers
-Guide](https://github.com/open-power/docs/blob/master/hostboot/HostBoot_PG.md) and the [OCC Overview](https://github.com/open-power/docs/blob/master/occ/OCC_overview.md).  These documents will give you an
+Guide](https://github.com/open-power/docs/blob/master/hostboot/HostBoot_PG.md) and the [OCC Overview](https://github.com/open-power/docs/blob/master/occ/OCC_overview.md) and see the code structure overview and videos shown at the [OpenPower build repo](https://open-power.github.io/op-build/).  These documents will give you an
 overview of the OCC, Hostboot firmware and some pointers on the source code. 
 
 # OpenPOWER Hardware Documentation #