This was the book to begin doing card magic. In the version I have, it specifically suggests that you read in order and just a few pages at a time (and then practice what you just learned). I followed that suggestion and found it “worked”.
Personally, I combined this with YouTube videos and was very satisfied with how I developed. To be frank, I probably learned more from trick tutorials on YouTube, but I definitely use stuff I read in The Royal Road.
At the end of the day, we can have very different learning styles and the key is to do it in a way that’s enjoyable for you. So follow your gut and go with what feels best!