FAMILIES
Only the Mass and Generic Model categories can use conceptual modelling.
The Mass template is found under the "Conceptual Mass folder" and is called "Metric Mass.rft".
The Generic Model template is with all the other family templates and is called "Metric Generic Model Adaptive.rft".
CONSTRAINING
Use points to drive constraints.
Use align and lock between point ref. planes, and parametric dimensions between point ref. planes.
(change point parameter "Show reference Planes" to make them visible).
POINTS
There are 2 types of points:
Reference Points
These are the default type and are just that - used as a reference (see CONSTRAINING above).
Adaptive Points
Points can be turned into Adaptive points via the command "Make Adaptive" on the ribbon when points are selected.
Adaptive points can be manipulated when the adaptive family is placed into the project.
For example if an adaptive model has 3 adaptive points you pick a spot for each of the adaptive points (in this case 3 places).
If you have made it using reference points it will be placed like any other family.
Families that use adaptive points are useful as sub-components of an in-place family.
LINES, REFERENCE LINES & REFERENCE PLANES
Use Reference Lines in preference to Lines.
When you "Dissolve" a solid the lines that generated the shape will be deleted.
Minimize the use of Reference Planes as they seem to make the editor behave differently. It preferences reference planes over anything else causing havoc.
DON'T DELETE - DISSOLVE INSTEAD
If you want to deconstruct what you have made make sure you use the Dissolve command.
This is true for solids, faces and connected reference lines.
MAKING SOLIDS
Sometimes it is better to use less reference Lines than more.
For example to do a cube you don't need to draw a reference line for every edge. You can just do the top and bottom.
Letting Revit decide can result in more robust solids.
INTERNAL FOLDS & TRIANGULATION
Revit can, and will, create warped planes.
To add a fold select the face and use the "Add Edge" command.
If it doesn't work it could be because you used inappropriate reference planes to create your solid or face. Dissolve it and try making it with less reference planes.