Click on your home icon to the left. This should take you to a running feed where you can see people and their posts from there. If that doesn't work just hit and follow from the "Who to follow" list on the right hand side of this screen. Should get you started I think :)

I found the "Explore" link way down on the lower right hand side of the page will bring up a regualr feed of posts. This is the only way I have found to see the general flow of activity. If anyone knows a better way, please advise.