Quoted for emphasis.
2: Thou shalt practice often.
This means that you select a weapon and round that you can afford to practice with often. Once a year is not enough, people. I like to get to the range twice a month in the good weather, and typically get through 300-500 rounds. This can get pricey with some calibers, but .357 magnum can chamber the much cheaper .38 special, and low-cost reloads are readily available for most defensive calibers. Bargain hunting is key. Buy in bulk whenever possible. If you canít afford to practice with it, you canít afford to carry it. Guns are not jewelry, take them seriously or donít carry one.