I needed to learn Go quickly for a small little side project and I was able to run through the fundamentals Go track in about a week and a half doing a few exercises here and there.

I've been exposed to quite a few programming languages so a lot of the common principles are there for me. What I really needed was to learn how Go is different and what the unique things about it are.

For example, I didn't need to learn about why loops are important. What I did like learning is how a for loop in Go was structured and how to use it in different contexts. Utilizing range was a great thing I picked up from their examples.

Exercise is a great hands-on tool to supplement and support learning.