Learned a lot of different languages (Fortran, Cobol, C, Pascal, MS Basic, Lisp, x86 assembly, Ada, SQL) in the school, but none was used for job.
Begin with Clipper for work, then Foxpo, VB, Access, VBA, VBScript, JavaScript...
Once you learned a language, you can pick up other languages more easily.
The hardest part is the transition from functional to object oriented and event driven programming.
And guess what, Clipper is the first object oriented and event driven programming language I touched under DOS!