In summer, warm weather can definitely make you want to spend your afternoons in a swimming pool in your lawn and a great addition to back yard. Also a great way to spend time together as a family and get in some super fun exercise! In some locations, you may not be allowed to build a pool yourself as you need to be a certified and licensed builder. May it square moderately deep will it be? What color do you want the pool to be? The more complex the design, the higher the cost. Dig out the area where the pool will go, even out the ground as much as possible along what will become the bottom of the pool. This will make building the walls and putting in the floor much easier.
Start by framing the walls with wood and metal rebar. Make sure to keep the walls even and in line with each other. Create a supply and filtration system, start building the walls with cinder block or poured concrete. Optionally make a moisture barrier, to keep all of the water from simply leeching out.