My digital logic study guide: gates to state machines

How I built up the logic unit in my head: 1. Gates and truth tables. Be able to write any small function as a truth table. 2. Simplification. Practice turning truth tables into simpler expressions. 3. Combinational building blocks: multiplexers, decoders, adders. 4. Sequential logic: latches, then flip-flops, then registers. 5. State machines: draw the states first, then derive the transitions. Redrawing each circuit from memory was the best test of whether I understood it.