@Rockhead,
Okay then you can go with Concord or European varieties (vinafera). If you plant Concord you need to tie/train the vines high so that the vine and grapes can droop down--they don't climb. If the European varieties, start them low because they will climb. Space them far enough apart that the vines won't tangle and make them difficult to manage--the nursery where you buy them can advise you on that.
If you have sandy soil, that's fine but did down pretty deep to loosen it up and you'll need to add a lot of organic potting soil, compost, well rotted manure (fresh will burn the roots) or otherwise a lot of organic material. Wild grapes grow well in forests etc. where there is lots of organic stuff in the soil--domestic grapes are no different.
The grape vines will need a lot of sun but the roots need to be cool. You can accomplish that by heavily mulching each vine with bark or similar material after planting or a lot of people who have access to rocks pile rocks around the vine that helps keep the soil underneath cooler. Until well established keep moist but don't over water--grapes are pretty drought resistant. Stick your finger into the ground. If it's moist an inch or two down, it's okay. If dry, water. Once established once a week or so is plenty to water. Grapes do sink very deep roots.
Don't plan to really start harvesting until the third year. After this year's growth read up on pruning and how to tell when the fruit is ripe and at peak for harvesting.