I know this is the Mac forum (this would be useful for everyone) but I sometimes find myself without wi-fi at times, and need to view tutorials from the web (video or text with pictures). I have an iPad and it really comes in handy. I downloaded all of the Logos 4 Tutorials, and even some I found on Vimeo and YouTube. These got synced to the iPad. But I also used something called Instapaper where you can save online webpages, this will sync with an iPad (iPhone/iTouch available) it makes the pictures and text available offline when I don't have a internet connection. I saved all of the L4 wiki pages, it works well and makes it easier to find help.
I hope this might be helpful, and bless everyone as they study God's Word with Logos 4!
In Christ,
Philana Crouch