I'll second the Elixir guide and maybe go on to the Phoenix guide for web dev. I just read enough to get going and then start building, then go back, read more,

I'll second the Elixir guide and maybe go on to the Phoenix guide for web dev. I just read enough to get going and then start building, then go back, read more, fix what I built. But people learn differently. I don't really get through books and I haven't needed courses aside from random examples of how to do some things.