The best programming language(s) to learn

Give me some career advice…
I used to to be in the software development business of database, programming (Assembler through 4GL such as Informix, Oracle)(80-95). I managed huge development projects ($million).
For the last 12 years, I have been out of the business, but still a hard core ‘end user.’
If I want to re-enter the IT business where should I train??
Web?? what languages and tools?
Database?? What languages and tools?
Am I even asking the right question?