A series of posts in line with the aforementioned You might not need jQuery, From jQuery to Javascript, a reference, and I know jQuery, now what?.
Essentially nothing new, yet linking to because it has all handy snippets collected in one place. One thing I do find missing from it is Element#classList.
Note: Don’t forget that it is thanks to jQuery that we no longer need jQuery for everything we build. It’s goal, over time, is for itself not to exist anymore.