Assuming you have the proper tools, bleeding brakes is a simple process that anyone can do. The first step is to find the bleeder valves on each of the four brakes. These are located on the brake calipers and look like small screws. Once you have found them, use a wrench to open each valve slightly.
Next, locate the brake fluid reservoir under the hood of your truck. It will likely be close to where your power steering fluid reservoir is located. Using a funnel, add fresh brake fluid to the reservoir until it is full.
Now it's time to actually bleed the brakes. With someone else in the driver's seat, have them slowly depress the brake pedal while you keep an eye on the bleeder valves. As they depress the pedal, watch for Brake fluid to start flowing out of each valve in turn. When this happens, quickly close off that valve using your wrench and move on to Bleeding the next one. Repeat this process until all four brakes have been bled successfully.
Assuming there are no leaks in your system, your brakes should now be bled and ready to go!