Starting a vegetable garden is one of the most rewarding things you can do with a patch of ground, and it is easier than it looks.
Sun is the one thing you cannot add later, so it comes first.
The most common beginner mistake is planting far more than you can look after.
If your soil is decent, in-ground beds are the cheapest way to start.
Most vegetables prefer loose, crumbly, well-drained soil rich in organic matter, with a pH between about 6.0 and 7.0.
Start with crops your household actually eats, then favor ones that are forgiving for beginners.
Timing depends on two dates: your average last spring frost and your average first fall frost.
Step-by-step advice, charts and free garden calculators at Garden Voila.