Are they easy to pick up and read books or do you need to have a certain amount of focus/ energy to read these longer novels?
Well I've read LOTR that many times now I actually don't even need to read it. I can just look at the page and know exactly what's happened.
However, the answer is yes and no. Sometimes and some books are just a grind and you really need to be 'in the mood' to be able to get involved. You have those days where you can go back and forth over 2-3 pages in an hour and hardly recall what you've read.
However on other occassions, when I'm completely immersed in the story, I can smash 3 big novels in a series in 3 weeks. Actually find it hard to put them down at times.