Locate the garden where it will get the most sun. Draw your garden and where you will plant what. I found this to be of help.
Think about how you plan to water. Picture a ballcock valve from your source to a timer then buried PVC to the garden. I would water just the roots as it tends to reduce fungus and bug problems. Up to you.
A rear tine tiller, some cash (figure 40 bucks?), and your 16-year-old neighbor (the 40), and a couple of days on the garden. Rope the dimensions off with the pink Walmart twine. Set the tiller about 2 inch deep for first pass and remember north to south then west to east then N to S etc. Lay down say 40 pounds of 13-13-13, at least 20 pounds of lime, and increase depth to 4 inches. Repeat the ccrosshatch process. lay down another 20 pounds of lime, increase the depth to 6 or 8 and crosshatch.
Rake surface dirt into rows. Test your watering system for several days, watering hard in the AM and determining how far from the top of the hill does the soil dry out by dusk. More than 1/2 inch (this varies), cut your early watering back to 1/2 the time and add in roughly 1/4 for the late afternoon.
If you are picky like me, plant something fast growing and look for proper germination and growth if the heat does not cause them to bolt.
Once I have seeds in the ground I will use a miracle-grow-like fertilizer once a week until I have two sets of leaves.
Have fun.