Constraints Explained




This person has some great ideas on how to use constraints to keep an object to a path, rig a piston, rig a jet exhaust,  He uses the snap to curser shift s keyboard shortcut.  He has some parts which don't constrain properly, and he shows you how to fix those issues.  

How to make a room





This person from decoded has all the basics of making a room.  He explains how get the camera settings  from a thirdparty plugin, and how to make the room, furniture, and lighting.  If you do this tutorial you should be able to make a very nice room.