To make a success of the vegetable garden it is neccessary to adopt the good practices of crop rotation and natural gardening.
For each vegetable and herb you can find its cycle of rotation, associated plants, diseases, parasites and some advice.
Try to keep a bio-diversity in your choice by using the old varieties (notably tomatoes and potatoes) rather than the standard hybrids.
See my detailed pages about :
The tomato The potato The pepper The strawberry