After 8 years of Snow Leopard, I've updated to El Capitan, and although I have a ton of questions, I just want to ask a couple for now if that's OK, Firstly, the format of the iOS Mac Mail, is there anything anywhere that would ever get the mail up and over again, instead of the side view when reading mail? I guess not, but thought I'd ask anyway, without using a different Mail app. When opening jpegs in the Downloads folder for example, the image opens in Preview as always, but the folder behind it slides off and leaves the desktop as background, Is that usual, so I have to slide back to open another image every time, Can the folder I'm getting the images from stay where it is, instead of sliding off to the right? Thanks EDIT: One other thing, the fan is at 4000rpm instead of 2000 on Snow Leopard, and doing very little. Is that a common problem?