Start with the soil
Loose soil with plenty of compost does more for a harvest than any feed. Work it in during autumn and let the winter finish the job.
A small bed is enough to start.
Short notes on growing vegetables in a limited space, without special tools or a lot of spare time.
Pick a few easy crops
Radishes, lettuce and beans forgive most mistakes and grow quickly. A first season goes better with three plants you know than with ten you do not.
Water less often, but deeper
A long soak twice a week sends roots downward. A light sprinkle every evening keeps them near the surface, where they dry out first.
Keep a simple record
Write down what was sown and when. Next spring those few lines will be more useful than any calendar.