Spongy feeling brake pedal

Brake bleeding is fairly simple. One good method is to get a large clear glass or plastic jar and put some brake fluid in the bottom not a lot is required, use a clear plastic hose that fits over the bleeder and place other end into jar with brake fluid. Open bleeder and pump pedal slow down, not all the way about 3/4 stroke and return to top, bubbles then fluid will start to come from brakes into jar, (with each stroke) the hose in the fluid will stop air being drawn up into the brakes, pump pedal slowly until fresh fluid is seen flowing in the hose. With the pedal down, lock off the bleeder and move on to the next wheel, do all four rear rear first then front, this method should work for you.