The language spec at https://golang.org/ref/spec is a surprisingly approachable one-pager, it’s worth at least glancing over.
One of my all-time favorites talks is https://vimeo.com/53221560 from 2013. It shows off how Go scales by starting with a small task and continuously adding more requirements into the mix, while also demonstrating its concurrently support.
If you have built a program in any other language I would say rewrite that program in GO. The benefit being you already solved the the domain logic of the program the only thing you need to focus on is writing/learning GO.
If this is your first programming language or attempt to learn to program I would say to just pick a small but simple app/program and just go ahead and build it. Don't spend too much time on reading articles or video tutorials just get your hands dirty as soon as possible.
