On a light side, here are some humor books to lighten your day…
Piled Higher and Deeper: A Graduate Student Comic Strip Collection
Comics about life in academia. The comics are smart, some of which are science related. Written and drawn by Jorge Cham who did his Ph.D in Mechanical Engineering at Stanford University.
Dairy of a Wimpy Kid
Funny comics and story of protagonist Greg Heffley in his pre-teen years. These series of book inspired an movie based on it.
The Best of The Joy of Tech comics
Selection of the best humor from The Joy of Tech online series by Nitrozac and Snaggy which provides you with a humorous look at the tech world.
Sunny Side Down: A Collection of Tales of Mere Existence
Book by Lev Yilmaz who had done YouTube comic drawing videos that was a great hit on the Internet. For example, see his video about procrastination.