OSPF is a link state protocol, that works by first building a database of all links on the network, before running the Shortest Path First algorithm to find routes to each network. It is relatively straight forward to configure when dealing with single areas, and has very similar commands to basic EIGRP.
Use the links on the left or at the top of the page to read more about OSPF and its configuration. If you're happy with the theory and are ready to hit the labs, there are two to chose from: IPv4 and IPv6. As with all labs on the site, you can regenerate the lab as many times as you like, and the objectives will be adjusted each time.