Once again this was taken from a 2009 class called "Autodesk Revit for Project Managers" by James Balding and Scott Davis.
Expect it to be like CAD!: This is not AutoCAD. There are no layers, and no command line. This is BIM and it is different to ACAD.
Drag elements (press and drag): Dragging elements or dragging across elements can move them. This will affect the entire model and all views. Turn off Press and Drag if you tend to click and drag the cursor around the screen.
I always tell my users to Pin objects, especially when the basic design is done this will help eliminate those anomalies of moving walls etc...
Upgrade the model: There is no backwards compatibility in Revit. You cannot do a "Saveas" and save down in Revit. If a project team, including consultants, is using a specific version don't open the file and save it using a newer version.
When and if the entire team are ready to upgrade to a newer version do so but make sire everyone including the consultants are on board and are ready to do the upgrade. Some projects can go for years and often new releases have additional tools that can greatly assist production.
Move levels: Levels define Vertical space in Revit. Moving a Level can move walls, doors, windows, ceilings, floors roofs and more. Levels are set early in a project and usually do not need to be adjusted during a project. If they need adjusting allow an experienced team member to do it.
Get enamoured by 3D: Revit is a great 3D and at building models. Don't get too caught up in 3D so that you begin to over model or expect your project teams to model too much. A really great model of a 3D toilet might look good for a perspective view, but placing hundreds of them in a model unnecessarily in a project will just slow things down.
Actually I would prefer to place model WC components rather than 2D symbols... it's a real balancing act...
Expect to learn it overnight: Revit is a complex building modeling and documentation tool. It's very intuitive to learn but it will take some time to master it.
Explode anything!!: Just like in AutoCAD exploding is BAD! Dont do it!