If I recall it correctly, the first 'real' book I have read was the neverending story when I was seven/eight years old. I guess, I have watched the movies before reading the book, otherwise I can't explain where I got the endurance to read such a big book at that young age.
Currently, I'm playing the witcher 3. I really like the main quests, but -as usual- the side quests are a bit dull. However, I just started last week and I'm pretty excited about the upcoming adventures. :)