There are many good books and resources on Z80 Assembly but this programming tutorial by Patai Gergely is valuable for a couple of reasons. Gergely last worked on this in 2004 when people still cared about good work. And it covers material beyond the basics such as simple data structures and programming techniques. The tutorial is available as a website: https://tutorials.eeems.ca/Z80ASM/index.htm and a single PDF that includes all the pages on the website: https://element.zxfiles.net/DOCS/ASM/Z80ASMBL.PDF #z80 #assembly