Here's my exclusive (and free!) CCNA 2015 OSPF On-Demand Video Boot Camp, tackling OSPF fundamentals and the tricky hub-and-spoke configuration!
This course covers fundamental link-state protocol theory with an emphasis on OSPF, and it's accompanied as always by plenty of labs run on REAL Cisco routers and switches ... including the tricky hub-and-spoke configuration!
You'll gain more knowledge from the free weekly videos I'm adding to this course in Jan 2016 -- so join us right now!
Enjoy! -- Chris B.