I see all these cool ideas about storage bikes and I planning to buy a new bike rack for multiple bikes.

What should I look for in a bike rack? I want something that can handle 3 or 4 bikes. The storage option should be able to allow a 5"6 person to remove one of the bikes reasonable.

Also what is the best parts of the bike to hang hooks without that would not cause functional damage to the bike? I remember as a kid we hung out bikes from the back wheels and then notice that the back wheels on all the bikes were being bent from the hooks.