Looks for the timeline slider on the left side of the screen
Click and drag the slider up and down. As you start to read more topics and posts, if you are logged in, our system will remember where you left off and return you to that post on your next visit. You'll also notice a horizontal, green line on the slider that indicates your current position in the topic.
Also have a read of our How to Use the Forums: New User Tips and Tricks post. Plenty to things to learn about using and navigating the Forums features. Enjoy!