This may be a dumb question but I can't find a definitive answer in the rule book. If I am left with a 4 and a 3 for example, and I lead the hand, am I able to play just one of the cards?
Absolutely. You may start a trick with a single card, or a set of cards of equal value. If you play a single card, that whole trick is played as singles. Expect lots of skipping in these single card tricks FYI