Maybe compiling a help doc with the most commonly used function by category (arithmetic, utility, geometry, etc.) would help? We are still investigating the best way of making the nodes more discoverable within then UI. For now you kind of have you guess what you want. Suggestions welcome, so far our best solution is to have a categorical tree-view and things like most-used and suggested nodes popping up based on what you have selected.

Marsel Khadiyev (Software Developer, EPHERE Inc.)

Agree with Martin. Plus, some more info on the "special renaming" like in the controller tutorial, where just renaming a field in "time" gives time value...