You can download the new version of PwnageTool from here. More information about the iOS 5.0.1 can be found here.
We'll be posting PwnageTool tutorials shortly. In the meanwhile you can find the appropriate RedSn0w tutorial by using the iClarified Jailbreak Wizard.
You can also follow us on Twitter, Facebook, RSS, or check out the new iClarified menu app to be notified as we post tutorials.