If you want to do things with transit, you need to understand some basics about its geometry and costs, facts that may raise interesting questions about your own goals.
To make this blog more useful as a reference, I've assembled the most important posts on these topics in the far right column under "Stuff You Need to Know."
If you haven't read them all, have at it!
Let me know if you think any should be deleted or others that should be included. The intent is not a list of the "best" posts, but of posts that best lay out fundamentals of network design.
Also, note the new travel schedule under my photo. I'll be in Madison for the Congress for the New Urbanism conference, and in Wellington (NZ) and Halifax (Canada) for project work.