1) Doesn’t matter, although it’s a little easier for me to hang by the front by using the handlebars. If you hang by the rear, you have to lift by the saddle or top tube.
2) Doesn’t matter. Although if you hang CF wheels, you’ll want to make sure the hooks are well wrapped.
3) The less you have to lift, the better. For me, that means wall hooks positioned so the rear wheel is still on the ground or just a bit off: just roll up, lift the front, rotate bike to vertical, hang the wheel. Easy.
Re products, there are lots of fancy ones but they all work the same as the $2 hooks you can get at your local hardware store.