First of all, think that you will be able to grow your own. Consider the size of your site and its location. Remember that some plants do not tolerate sun, and others will not tolerate the blackout. Let's say your plot is in shade, the solstice is equal to 3-6 hours, I will plant beets, radish, cabbage, pumpkin, celery. These plants are not very fond of heat and light. If your site is lit well enough, put the tomatoes, cucumbers, eggplants, peppers.
Very much depends on the soil type. For example, you have a plot of light sandy soil. In this case, you will plant early maturing crops (squash, zucchini, pumpkin and others). The reverse situation (in the garden is dominated by heavy clay soil) will stop your choice on late-maturing crops (tomatoes, cucumbers, beets, garlic).
Also you should start from your experience. Let's say you believe that it is not enough. Then plant those crops that are easy to grow and care for them. These include pumpkin, beans, beets, radishes, zucchini, etc. Experienced gardeners can try to grow tomatoes, peppers, cauliflower, celery, and other crops.
Pay attention to the size of the site. If it is small, it is not necessary to plant potatoes, cabbage. These crops you can buy in the store at any time of the year for a low enough price. Try to use mixed planting, that is one garden will plant some crops. In this case, note that some fruits and vegetables can not be planted next to. For example, in any case not to plant watermelon and potatoes paired.
In the garden you can place the shrubs. Purchase the seedlings of sea-buckthorn berries, this berry is very useful, it can be frozen for winter in the freezer. From sea buckthorn have a delicious jelly, which is rich in vitamins. If you suffer from high blood pressure, plant a honeysuckle, because this berry is perfectly lowers blood pressure, it also strengthens the walls of blood vessels and improves their elasticity.