Don't worry about fuel stuff yet. You can set that up any time.
Just a couple of quick things to set up are the units it displays, ie miles v klm etc, the size of the engine and type of fuel (DIESELa). Follow the instructions in the booklet and set it up for klm and ltr, temp I set to Celsius, for Manifold Pressure set it to BST not MAP, pressure units to PSI.
Select what readouts you want showing. For now I'd go with Boost and Temp and any other 2 you like.
Ooops clicked the wrong button!
Factory boost readings on my car were a steady 16-16.5 when I planted my foot with a momentary spike to around 18, the Scangauge might not pick up the spike as it drops in less than a second, around town boost rarely gets to more than 15 and with a light touch on the throttle to maintain 60-70kph it sits around the 10-12 mark or less. So if your readings are similar to those boost, is good. Temp is high 80s to a max of 91c so far for normal driving, even on 35+ days.
I don't know if you have EGT gauge but my temps are around 250-300c normal driving around, 400 or so pushing it up hills, I haven't seen it get to 500 yet.
Good luck mate, hope this helps.