Al-Mu'in fi Ma'rifah Manahij al-Muhaddithin - Khalid ar-Raddadi

This is an excellent book by Shaykh Khalid al-Raddadi that will teach you everything you need to know about the different books that have been produced in the noble science of Hadith, and the links they have with each other. For each book, he has written a kind of technical sheet (author, importance and place of the book, methodology, etc.).