It is suggested that you simply start at the beginning when learning how to use photo shop software. Do not try to follow a tutorial on adding High Pass to your picture or cropping with perspective, when you have not even learned tips on how to create a new layer. Newbie Photoshop users can learn significantly more if they learn the fundamentals at the beginning. Learn the fundamentals from a skilled coach who teaches you the best way to do it in video format photoshop tutorials.