Cantonese : A Comprehensive Grammar + Teach yourself : Cantonese
https://www.bookdepository.com/Cantonese-Stephen-Matthews/9780415471312?selectCurrency=USD&redirected=true&gclid=Cj0KCQjwqvvLBRDIARIsAMYuvBHLTXy4gZoJDg3gi-8YX9SWSOWzSeB9hVjqnlWSl1e4KiSUY9DqV_UaApSOEALw_wcB
Cantonese Learning Resource Recommendations
It is a video by a Cantonese learner from the UK. He introduced a series of books and why he used them.
HK government Cantonese Teaching materials : “Elementary Cantonese” (Vol 1: Lessons 1-10) by Sidney Lau
It was published by Hong Kong Government School for British Officials since 1970s. It is certainly the useful resources for self-learners.
Lonely Planet Cantonese Phrasebook (Book Review)
it is colorful
contains a lot of useful phrases
contains funny expressions
easy to find the expressions you need, (it is divided into several categories, like social, meeting people, romance)