How do you make a door in roblox

for a starter do this:
1.be on your account
2.click the picture on your page
3.click BUILD button.
3.wait for it to load....
4.click Insert on the top corner of your screen/window
5.click the v then click FREE MODELS
6.type in the bar "Door"
AND CLICK A FRIkken DARN GOOD MODEL