First, I need to get a USB hub, because I don't have enough ports to accommodate a wireless keyboard and a mini wifi module.
Although I haven't created anything useful yet, I was able to create a silly Scratch program and experiment with Pi's version of Minecraft. The biggest challenge, so far, has been using the tiny keyboard!
Since my projector was old, I needed to use an additional VGA to HDMI adapter, but it worked like a charm.
Lucie's advice to plug the projector in first and the power to Pi last allowed me to get up and running on the first attempt!