There are a lot of ways to create grids in Photoshop, but one of the most common is to use the Grid tool. The Grid tool lets you create a series of lines that run across your image, and it’s perfect for creating patterns. To start, press the G key and drag a line down the center of your image. Then, press the H key and drag another line up the center. Finally, press the V key and release the mouse button to finish. You’ll have created a grid pattern!