New to circuits, or to simulation?

Start here. Thirteen lessons worked against real problems from real textbooks, from your first circuit description to two-port parameters.

Already know your way around circuit simulation?

You need to know what Symbulator does and how to ask for it. Every feature once, with a reference at the back.

Want the detail the lessons leave out?

Short notes, each on a single topic — input files, SI prefixes, every control in Settings. Optional reading; nothing else depends on them.

Working from a particular textbook?

A selection of its examples, each described in Symbulator and checked against the answer the book prints. One per textbook, each with its own PDF.