Question about fertilizing

Depends what you're planting... many vegetable seeds don't need fertilizer until after they germinate and develop their true leaves. And with fertilizer less is more, many people over fertilize and burn their plants.

As others have mentioned, it all depends on how you are going to be using the plot of land. If you are going to plant seeds don't fertilize now. If you are going to use it for young plants you can fertilize now or wait until you put the plants in. As to how deep to "dig in" the fertilizer, it depends on what you are planting. Very few vegetables require "deep" fertilizing. Things like tomatoes have fairly shallow roots and, for the most part, do better with "surface fertilizing".

A note on fertilizer: Too mush is a lot worse than too little. Follow the vendor's directions and it is better to use small amounts more often than to fertilizer all at one time.