Slowly getting used to Aperture mode and ISO

My learning curve with my new camera continues and after attempting to read various manuals....I still have no idea what they mean so it's back to the tried and tested method.  Point and click, try some buttons, point and click...see what the difference is.  This method seems to be working quite well for me at the moment so will continue until feel the need to understand what it is I'm doing! I'm such a pro photographer :-D