How to use Autocom CDP

Last week i bought a Autocom CDP from a Chinese obd2 supplier. As i am a beginner, i don't know how to use it properly. So i want to look fro help from someone who is proficient in car diagnostic tool . If some one who can help me, i will offer him a gift for thanks.

(a) where are you located? There may be a member nearby who could help.

(b) what year is your Sprinter? (and model, if not in the US/Canada)

(c) i would start by installing the program on your PC, plugging it all together and in to the Sprinter, and see what it says.

--dick
p.s. it's hard to tell if this is a "real" member, or a posting merely serving as an lead-in to the scanner advertisement.
(note how "name" of poster matches vendor name)