VB is the first language that has the RAD tool that made programmers' lives easier. Delphi made it better with brilliant OOP support. Haven't used Delphi but learned Pascal in my college years. If you know Pascal, it would be a lot easier to learn Delphi, in fact, I was able to run simple applications using dpr compiler (if my memory serves me right) programming Pascal and then slowly using some of the Units from Delphi framework and it worked eventually. I just never had the chance to dive and dissected it.
( However, I seem to forget, for those old-timers of Delphi, was it using Object Pascal or they enhanced Pascal to support OOP )
For those who want to learn this, as I've always said, learn the concepts not just the language.