It was a bit easier than with Southern Min, but it really wasn’t that easy for me to find Cantonese learning materials. I found online dictionaries, but none with audio. There are some very basic youtube videos, but only a few. I emailed a few people with blogs that mentioned learning Cantonese, but nobody had any suggestions of use.
My friend David did tell me of one podcast to help people learn Cantonese, but unfortunately I didn’t know about it until I’d already left Hong Kong. Other than that, the only resources I know of are Pimsleur and the FSI course.