Beckett was a rather complex Irish individual. He penned some truly brilliant works and also some that weren't quite as outstanding. In Fahrenheit 451, one can't help but think that perhaps books were burned because they read The Unnamable. Incidentally, it's indeed a rather apt name for the book, but let's not dwell on that further.
I wouldn't highly recommend this entire collection. Instead, just focus on reading Waiting for Godot, the combination of Endgame and Act Without Words, and don't worry too much about the other plays. If you really must, then Happy Days is a somewhat decent piece. Those other works might shine in a theatrical setting but not so much as reading material. And this is coming from someone who counts Beckett as their favorite writer. Here's a fun fact: he's my favorite, yet the best book I've ever read is Stoner by John Williams.
You can extract a great deal of black humor from Beckett's works. “Nothing is funnier than unhappiness.” Well, until you find yourself embroiled in the story, nothing seems funnier. But in a way, we're all part of it. One can't help but wonder if all stories are essentially the same. It's all a cycle of events that have occurred and are happening again. We're all striving towards a goal, hoping to achieve happiness and feel special. Once we reach that goal, we then set our sights on another and wait for that special something to arrive. We're all waiting for Godot. We frequent new restaurants, pubs, and travel to distant and beautiful places, believing that we're not part of the same old story. But if you visit those new restaurants, pubs, and faraway places enough times, you'll realize that you're essentially standing on the same stage, just with different scenery. And then everything eventually returns to nothingness, only to start anew. I often wonder if there's an all-powerful being out there who toys with his characters, much like Beckett does, simply to pass the time.
Some of the things he wrote are truly memorable.
Hamm: What's he doing?
(CLOV raises lid of NAGG's bin, stoops, looks into it. Pause.)
Clov: He's crying.
(He closes lid, straightens up)
Hamm: Then he's living.
There's a rather amusing anecdote about Beckett. He was walking with a friend through a London park and commented that it was a nice day. The friend responded, "Yes, it makes one glad to be alive." Beckett's reply was rather characteristic: "I wouldn’t go that far."