This means that you will not find super complete introductory materials about every aspect of programming with Zig. The language reference is very good but for example the standard library doesn't have docs yet as we're still working on the autodoc tool. On the other hand reading the stdlib source code is very easy in good part thanks to the reasons you already mentioned in your post.
Last but not least, at the moment we compensate the lack of learning materials by having a community that it's very good at helping newcomers, so make sure you join one of the communities.