The answer would depend on what programming experience you have? Do you have any assembly language experience ? with other targets? ie have you used an assembler ( and maybe linker ) before. Are you familiar with hex? bytes, bits etc , You will learn this and much more ...

Id look for a book that targets Assembly programming on a Apple 2, ie not a book on general 6502 programming.

   Such a book Id expect to discuss things like Apple 2 memory map , Apple 2 hardware and how they are used in assembler language. 

Hopefully the book would also provide guidance using a particular assembler ( hopefully still available)

I googled phrase Apple 2 assembly language programming for beginners?

and lots of very good looking links popped up.

You aim is a challenging task. Much to learn. Good luck. However entirely do able these days.

My background is electronics engineer, embedded programing on in assembler (some Motorola processors and others) and C for a few years before moving on to other things ....

The book Assembly Lines: The Complete Book available as a FREE PDF download from .... site https://ct6502.org/product/assembly-lines-the-complete-book/

INCLUDES All 33 of Roger Wagner’s Assembly Lines articles from Softalk magazine, plus appendices, in one complete volume.