Article: The size of the patio determines the amount of concrete required and whether you will need a mixer. If the patio is too large in area, it might not be an easy DIY job. The location is also important. You want to choose a mostly even area so you don't have to level the uneven ground before you lay the concrete.  Check local building codes to find out if a permit is required, how far the patio has to be from property and house lines, or any other county or city regulations. Before you dig anywhere in your yard, find out where septic tanks, underground lines, or other utilities are located. Tie string between the stakes and use a line level to determine the slope. The stakes and string will give you a good picture of how the patio will fit in your back yard. Adjust the area if needed.  Cutting the stakes to a pointed end may make them easier to drive into the ground.  If the ground is uneven, you have two choices: build up the low side or dig the high side out. This can be done with a hoe, a shovel, or other common gardening tools.

What is a summary?
Determine where you want to construct a concrete patio, how large it will be, and its exact dimensions. Drive stakes into the corners of the patio area. Remove all weeds, grass, roots, and topsoil from the roped off area.