It's not actually illegal to do your own electrical work, though you'll need to get some types of work inspected. HOWEVER, your insurance company will absolutel

It's not actually illegal to do your own electrical work, though you'll need to get some types of work inspected. HOWEVER, your insurance company will absolutely seize on it as an excuse not to pay if your house burns down (most insurance policies will require that anything but the most basic work is done by qualified people).