Hi there and welcome to the Big Little Book on Git. This book was written with both the new IT recruit and the seasoned IT professional in mind, but with a view to aid fast recall of information without having to lift a four-hundred-page tome! As well as condensing detailed technical facts, it is accompanied with useful hints and diagrams to help the concepts and understanding of the ideas stand out. Handy for those work or interview situations where there’s just not enough time to filter out the pertinent information from all that text. Take care and happy reading.
I got this book from a set of recommendations from Gitlab. I am not sure how useful it would be for someone completely new to Git, but if you already have some knowledge, it is a clear way to progress. And the parts of Gitlab CI (which was the area I am interested right now) give you a starting point to do some experimentation.