The latest issue of Charlie Hebdo is available in an app for smartphones and tablets: IOS (Apple) here, Android here, and Windows Phone here. If the other versions work the same as the Android version, you open the app and then you’re offered the option of an in-app purchase, which allows you to buy an English version for $3.47 (or French or German, IIRC). In the English Android version, when you touch a cartoon or article, an overlay shows you the English translation.
Since I’m writing at a website that requires a glossary to be understood, I doubt it will surprise you that a lot of the humor appears to depend on references that are opaque to the uninitiated. Here’s an open thread.