Many hosts have a “single click” WordPress installation feature. As for the WordPress theme, see the theme’s documentation. Usually you can log into the WordPress admin and from there install the theme by uploading a .zip file. Then you set the theme’s options if it has any and start publishing your content from within the WordPress admin area.
The maker of the theme should be able to provide you the best instructions if they do provide support (not required at ThemeForest but often provided).
The live preview will encourage more people to purchase. If you use screenshots only, you won’t make as much money. Sure, you’ll get ripped off, which stinks, but I’d rather get ripped off a little and make more money then not get ripped off at all and make less money. It’s just the world we live in. Give it a shot.
Man, I can listen to this all day.
Not yet, but I’m working at getting to that point.
I think most people fly solo but I’ve seen some partnerships (can’t remember names) on ThemeForest. Maybe somebody with experience could speak on that.
Some people find a partner. One talented designer plus one talented developer and split the profit. A partnership of specialists.
Just as it should be, people choose how to license their work. Some PHP code is free, some is not. Some graphics are free, some are not. Sure, there is more good free PHP code than graphics, but that doesn’t make anything unfair. In fact, unfair would be expecting anybody to make work available for free that they don’t want to.
My opinion is that if you want to make something both functional and nice, you should learn both skills. My observation is that the most successful of all Envato authors are people with both design and development skills. They probably learned one after the other.