By the way this book is over 1000 pages long
It is also the first of five books and two novellas published, so far.
Reading comprehension...
But also, this is why reading comprehension is a skill. Because what Sanderson is doing with his epic fantasy is expecting that the reader is coming in knowing that the book is going to be laying out an expansive and mysterious world, which will be gradually explored and explicated over the course of the story. 'Way of Kings' is especially egregious in this because (as noted by the original questions) it doesn't even start by introducing you to the humble (farmboy, traditionally) protagonist whose situation you might understand a bit before it unfolds; it starts by introducing a dozen different mysteries and proper nouns, and asking you to keep them in mind as you read to discover what they are.
This isn't a bad approach, but it is a specific one, and if a reader has asked 'what's a good fantasy series to start reading?' it's entirely possible they don't _know_ that this is a mode of reading/writing. If what they've read before has been books that start off introducing one character for them to relate to, and here's the interesting quirk of their situation, it's perfectly reasonable to wonder why, after three pages of reading, they don't know what's happening.
This is not to say that other ways are dumb or bad, either. 'Hunger Games', eg, starts off with 'here's a poor girl trying to keep her family fed in a bad situation' before it gets into more of the complexities and layers of the story. On the flip side, I've meet Sanderson fans who struggle with other fantasy novels because they get so wrapped up searching for the 'system' of magic that they don't appreciate anything else that, eg, Le Guin is doing.
Luckily, the way to get reading comprehension is to read - a lot, and a lot of different things - and to talk with other people about what you read, and that's all things the internet facilitates greatly. I hope the original asker pressed on and eventually enjoyed the rest of the book!
Genres are usually defined by their tropes—mysteries have murders and clues, romances have two people finding each other, etc. Science ficti
If you want to read more about the particular ways that scifi/fantasy expects readers to be reading, this essay by Jo Walton is really good.
Because SF can’t take the world for granted, it’s had to develop techniques for doing it. There’s the simple infodump, which Neal Stephenson has raised to an artform in its own right. There are lots of forms of what I call incluing, scattering pieces of information seamlessly through the text to add up to a big picture. The reader has to remember them and connect them together. This is one of the things some people complain about as “too much hard work” and which I think is a high form of fun. SF is like a mystery where the world and the history of the world is what’s mysterious, and putting that all together in your mind is as interesting as the characters and the plot, if not more interesting.
