Just click on the New Posts link in the navbar up top...
It will list all new posts since your last visit... and that you have not viewed.
Generally what I do is click on the "New Posts" link every time I visit the forum. I scroll down through the various posts and visit the ones I'm interested in or have time for. After each viewing/post, I click on the browsers Back button to go back to the New Posts listing. After I'm done visiting the ones I want to visit, I'll then click on the New Posts link again, in case someone else has posted since I first started. If I happen to get through all that I want to view and/or post in, and there are no more I care to view, I then click on the "Mark Forums Read" link... which will clear any leftovers from the New Posts listing. Next time I visit, I click the New Posts link and all I see are new posts since my last visit.
If you visit everyday, this is the easiest method to use right now... although there are times when there will be a couple of pages of new posts to sift through. There will come a point in time where it won't be feasible to use this... when we start seeing several hundred posts per day. It could still be used, but a challenge to follow and keep up with any way you look at it.