You drafted him as a cornerstone of your 2015 fantasy football team. But alas, Jamaal Charles has blown out his ACL. Here's an article from the Washington Post listing some possible fantasy RB replacements.
Doug Orth's All Out Blitz articles at FF Today have long been a favorite of mine. This year and last his contention is that the first 3-4 games of the regular season are now serving as a preseason for NFL teams. I certainly can see that; seems like things are very much in flux to start. Take a look at his latest AOB article to see if you think he can help you pin down where things are going.
I've said it many times -- the late rounds of your draft are what make or break a fantasy football season. Rotoworld has two articles about which players you should keep an eye out for. Here's the link to the NFC players article; that article has in it a link to the AFC players to watch.