You should already know how to solve a single face of your 2x2 if you are trying to learn the Ortega method. We recommend starting with the white face before transitioning over to colour neutral.
In step 1, simply solve the white face not worrying if the corners are in the correct position or not. For example, your White Blue Red corner could be next to your White Gren Orange corner. In step 1 all we care about is getting 4 white stickers (or stickerless stickers, if thats a thing) on the bottom face.