Which language do I learn?

[Bosch, AN, Andrew, Dr]

Hi all. I want to learn a programming language most suited to the 
sort of stuff discussed on this list i.e. for ignition and FI 
control. "C" seems to come up often, but I've also seen reference to 
Visual Basic, Delphi, etc. I know the VERY basics "C", but so little 
that it would be easy to change at this point. Speaking of "c", there 
seems to be so many variants of that! Please help. 

Thanks.
AndrewDr A. N. Bosch
Physiology Department/ Sports Science Institute
University of Cape Town Medical School
P. O. Box 115
Newlands 7700
South Africa