All SitePoint courses have moved from the SitePoint website to Learnable
Thanks for posting the link. A bit lazy there on my part.
You've obviously got a bit of a background in programming what with python etc.
Just my opinion, but I'd say that title could be a bit off putting as a first choice for a novice. A bit difficult to grasp and lacking in detailed explanations. For the more experienced?
The Nicholas.C.Zakas and Stoyan Stephanov titles I think are well worth consideration. Even though they maybe cover some of the more advanced topics, the foundation sections are very good, and often have diagrams to help illustrate the explanations. I'm thinking things like functions, scope, hoisiting, primitives, references etc.
Anyway I guess that's what the book sticky is for.
Edit: Just an after thought as you mentioned career. I'm not in the industry myself, but I'd say that getting a good solid grounding in HTML and CSS, would be a priority. And to be honest looking at the sort of vacancies going often a decent qualification is a prerequisit. I'm sure others here could better comment on that though.