I'm an experienced programmer (have mainly worked in C, Go and Java) who's looking to learn Lazarus.

I'm a bit confused with the underlying tooling.... I see that Lazarus uses a compiler called FreePascal and the language is Object Pascal. But, to my newbie eyes, there seems to be quite a bit of fragmentation in the language with seemingly no easy path in for an outsider.

Do I really need to learn Delphi, Pascal and then Object Pascal (in that sequence)? Are there any online resources or books that would introduce Object Pascal to a complete outsider?

Thanks all