Cut all material using the Lumber & Cut Sheet Layout Guide. Group the 24" panels together, so you’ll only have to cut (1) panel. Leave about 2" of scrap at the ends. Create a fence using the straight board and clamps to help guide the edge of the circular saw.
Start by cutting the small boards. Clamp the panel to a sturdy support—measure the height, then clamp the fence in the proper position. Next, cut the desk’s front panel; note that the top edge has a 10º angle to match the desktop slope. Set the circular saw base to 10º, but before you cut, make sure the distance from the blade to the fence is accurate. FYI: All other cuts are 90º, so be sure to adjust the fence accordingly.