You need to follow the steps in the link above your post to get El Capitan. You need El Capitan before you can install High Sierra anyway, but since your computer doesn't support High Sierra or Sierra, El Capitan is your only option.
You need to follow the steps in the link above your post to get El Capitan. You need El Capitan before you can install High Sierra anyway, but since your computer doesn't support High Sierra or Sierra, El Capitan is your only option.
El Capitan is a much more solid operating system than Yosemite. Yosemite is also now fully unsupported by Apple so it's a strong likelihood that applications will soon begin to stop supporting it.