In general it is almost always better to learn using multiple styles instead of just one, if you prefer to do A then don't just do A but also try to do some B to improve your learning. Learning based on solving specific problems is good to get experience, but it is not good to get an overview of a field, you really want to get good at both the overview and the nitty gritty.

Also the purpose of reading a book isn't to become a master at implementing details, it is to get a good overview of the subject. You still have to practice implementations afterwards, but by having seen everything before your mind will now slot all problems much better and be more confident as you work through those implementations instead of looking up random advice on the internet.