Getting these basics of obstacle crossings dialed will make your log/rock hopping etc a lot easier and make learning the techniques in episode 9 easier and safer. This is the homework you need to do before launching into the log hopping.
Logs, rocks, banks whatever the obstacle. You will learn the slap, the single blip, the double blip, and the splat or lifter techniques that will help you deal with different obstacles you come across on the trail.
Who doesn't like hill climbs? You will learn three different body positions for the hill climbs that will give you more efficiency and more traction. You will learn about how to attack the hills and how to shut it down safely if things go wrong.