I didn't mention Latin because I haven't used it since high school. And to be honest, I have to admit that I would be lost in Latin so I can't really add it to my list.

However, I found Latin fairly easy to learn as a language. Much easier than French certainly. No funny umlauts, cedilles or accents, waaaaaay less exceptions to the rules of grammar, and you basically pronounce the letters the was they are written.