In short, nah, I don’t bother much with updating. We have the updates in mind like that because of phones and videogames consoles. But when it comes to computer graphics and Blender, there’s no such hurry. Core stuff barely change, what changes are names and UI stuff most of the time, putting something here instead of there, removing this, adding that. Old tutorials are as beneficial to watch as like the day they came out. There’s a thread with a good read we always point to, linking up:
https://cgcookie.com/community/18260-learning-through-different-versions-of-blender
