Be aware of how the sun moves over your yard throughout the day, where your nearest water source is located, and whether one area is more prone to wind or water erosion than another.
Trust the information on your tags. This is especially important if you haven’t grown that particular plant before.
For healthy, productive plants, grow them in their appropriate season. Not only will they taste better, they’ll require less maintenance as well. Plants tend to fall under a “warm weather” or “cool weather” category.
The best decision I ever made was installing a drip system that functioned on an automatic timer. It was initially more work to assemble, but eventually freed up my day-to-day so I could focus on other garden chores.
If you purchase starter plants, stick those tags in the soil when you transplant them! You may find yourself needing to refer to the information later in the season.