check this: http://sunniport.com/index.php?resources/uddat-al-murid-al-sadiq.9/ === also, read the FAQ on how to add a resource.
Sidi Ahmad Zarruq wrote a book on the preparation of a true seeker and gave the guidelines of true spirituality. This is a book which a sincere seeker should read cover to cover: https://ia802506.us.archive.org/33/items/odmrsaodmrsa/odmrsa.pdf