If you are serious about thinking that Latin would be a good precursor to learning other languages, then I would recommend that you learn Scheme. Scheme is a dialect of Lisp, which was one of the first programming languages. Scheme was designed to be used to teach the fundamentals of programming, and was used for quite a while at MIT in their introductory programming course. The textbook that was used for the course (Structure and Interpretation of Computer Programs) is freely available online, as are quite a few video lectures that teach from the book.

There is another dialect of Scheme called Racket, that has an entire development environment intended to make it easy to learn Scheme. Racket uses another book titled "How to Design Programs", that is also freely available online.

Learning Scheme will give you a solid foundation in the fundamental concepts of programming.

If you would rather start to learn programming with a more mainstream language, Python is the programming language that MIT is now using in their introductory programming course.

For more information use your favorite search engine to look up "mit ocw gentle introduction programming" or "sicp" or "htdp".