There’s no Go book that I personally would recommend without hesitation.

Instead, I would suggest that you try to find a bunch of blog posts and lectures and read/watch them in order to get a feeling of the Go philosophy. The official Go blog has some good articles and otherwise I recommend to have a look at what Rob Pike and Russ Cox has written/presented.

Then I believe that as soon as possible it’s a good idea to start some toy project so that you can dive in.

I’m afraid I don’t have too many links to share. This might be a good starting point: https://www.youtube.com/watch?v=7VcArS4Wpqk

Here’s a meta-resource that could be useful: https://github.com/avelino/awesome-go (see the Resources section at the end of the ToC).

Best of luck!