From the dept of thoughts I wish I had had first. Kai von Fintel has a blog for his graduate semantics class. As well as interesting updates on thecourse, the blog contains links to the textbook that is being (further) developed while the course is being run. Most readers of this site will be familiar with much of the content presented in the textbook, and indeed will see claims that don’t match up with their preferred doctrine every other page. Still, the book is (so far at least!) well worth reading as a model for how to present some quite difficult material in a very accessible manner. Since it is licenced under a creative commons licence, you can even borrow the parts you most like as long as you are suitably generous with accreditation.