Building a vegetable garden is not all that difficult. If your lawn will grow grass it will grow vegetables. You dont need to know the soils ph or anything else for that matter. If your backyard is underwater because of poor drainage, or some other matter you should look at raised beds. But other than that it will grow vegetables.
Plants only need three things to survive. Water, sunlight and somewhere to stick their roots and that is basically it. All the rest is secondary.
To see if you can grow vegetables all you have to do is plant a few seeds. I recommend starting small in a 2 meter or 2 yard long by 1.3 meters or 4 feet wide vegetable garden bed. I wouldnt even dig it up. Just make it out and then push a seed in the soil between the clumps of grass. Plant seeds about 6 inches apart and that is about it.
First I would buy about 10 packets of seeds from the supermarket or garden center and then plant one seed from each packet at a time. I dont like planting the same vegetable seed one after another, as that way pests and diseases cant travel easily from one plant to the next. After you have planted the seeds water the whole garden bed. Now is the waiting and watering game Water every second day if the garden needs it. In about two weeks things should be happening, so make out another meter or two and plant some more and that is how you build a vegetable garden the easy way.
When building a vegetable garden you can do it the easy way or the other way. Ill stick to the easy way as that is the way I know. First up go to the supermarket and check out the price of vegetables because that is the money you will be saving in a little over a month.
Start planting your seeds in the early spring time and hopefully after the last frost has passed, but it doesnt matter if it hasnt. Just pick a spot where you want to start the vegetable garden and mow the grass as short as possible. This is to make it easier to plant the seeds but also the vegetable plants should be able to grow above the grass in a very short time.
Now mark out the start of the vegetable garden bed. We are only going to plant one end of the garden so pick a spot where the vegetable garden can grow across your lawn. This is your first vegetable garden.
Now it is planting time. Forget the digging that is too difficult, just start planting. This way you get a variety of vegetables all growing on one place. You can plant more of the vegetables you really like. Now water the whole area and wait. Every weekend you could plant another meter or two and keep watering and adding seeds where they dont come up. After about 2 weeks to a month depending on the weather and how warm it is things should start to happen and there will be fresh homegrown vegetables on your kitchen table.