If you are learning for historical context and curiosity reasons, K&R is a good place to start. It's short easy to ready but is missing a lot of important cont

If you are learning for historical context and curiosity reasons, K&R is a good place to start. It's short easy to ready but is missing a lot of important context. A lot has changed in the world since it was released. If you are learning for practical reasons, like you have a project in mind, then it will be dependent on that project. C patterns and idioms vary a lot per project and time period. For a newer, more practical book I liked C Programming: A Modern Approach. Just don't go into it not expecting it to be too modern. The subject matter is still still C. After that you'll still probably have a lot to learn for whatever project you have in mind. C has a lot of quirks, peculiarities and shortcomings. There is no standard way of dealing with them so each project has their own best practices or set of helper APIs/tools with some minimal overlap.