Need help selecting a 2nd language to learn.

[Omanes Alexandrapolites]

If its possible you could try them all for a month or so and then drop what you don't like. If you find you have a flare for more than one then you could keep this selection and gain a really rich vocabulary.

Regardless of all this however, it is advisable to get a qualification in them if you can rather than just learning it by yourself. If you don't go to a country which speaks your new language, but instead English, they're going to ask you to prove it with a piece of paper.