It's hard to know everything about everything. So instead of trying to learn "random" new techniques, ask yourself: What do I want to be able to do? Do I want a blog? Do I want to be able to code from scratch? Do I want to offer a service? Once you know that, you can focus and target on a certain subject, and find it much easier to learn because you have a goal in mind, and you can see how much progress you are making.
Any goals in mind?
I cut my teeth building web pages in raw html many years ago, and my education stopped there. I still manage a couple of those sites that are getting pretty tired. It's time to upgrade my knowledge and learn how to use some more current approaches. I'm not looking for cutting-edge stuff, just good basic web page techniques.
Can someone recommend a good book or guide?
Thanks in advance