Bitcointalk is honestly overrated in terms of learning in general. It's great for having questions and discuss/debate certain news and topics, but if you're a beginner you're better off reading articles off the web.
I would say that there is lot of quality stuff on the forum but there are many articles directing users towards some misrepresented information over the web as you can't check the authenticity of them but on the contrary the forum will have reliable information source and mistakes being pointed out by high rank and knowledgeable members.There are lot of useful sites also that shares good bitcoin related articles and covers most of the topic but a newbie won't be able to differentiate between them so it's better to go through forum route in my opinion.
They can opt for books like Mastering Bitcoin to have the proper knowledge if they want to or as you suggest to them watch Andreas videos on YouTube and plenty of other resources but once they find out the basics they can check for web sources also to find out the legit one.