Thank you so much for your information. I had the same problem with an Apple ID which was from an old account used to purchase things from the Apple Store, but never used to purchase any content from the iTunes/App store. So what the "Please review" problem seems to be related to is not having a "verified" payment information associated with the iTunes Store.
Similar to what dorrall7 suggested, I got onto an iPad and went into the Settings. Under the iCloud settings (even if you aren't using iCloud) I signed in so that I could get to this Apple ID's Payment Information. This is the only way I could get to Payment Information. The iTunes & Apps Stores settings on the iPad didn't allow for verifying Payment Information. The Manage my Apple ID option through appleid.apple.com also doesn't have Payment Information to verify.
I didn't want to keep the old credit card information on file, so I canceled this Payment Information, and went back to sign in on the computer's iTunes. This time it now gave me a "Verification is required. Before you can make purchases, you must click OK, then verify your payment information." message. No more annoying unresolved "You must enter a valid email address (for example: mac@example.com)." message and being stuck on the Edit Apple ID Details page. From there more normal functions were available and I was able to provide and update the necessary information.
To think this all started with "This Apple ID has not yet been used with the iTunes Store. Please review your account information." The sad part is I spent HOURS talking to Apple Support and was told everything looked fine with the account. So if Apple would just correct that "You must enter a valid email address" message and instead take you to the Payment Information section, all would be fine.
Things were worse on the iPad, since you never got any error message when trying to purchase something through the App Store, but was left stuck looking at your Apple ID account information, with no way to get to the Payment Information section. Hope this problem gets fixed so that no one else needs to wonder why things aren't work--especially since these would be new customers to the iTunes store who happen to be long time Apple customers.