Multilingual

I'd recommend sticking to one at a time :P You might end up confusing yourself and just not progressing very fast on any of them, if you try too many at once.

Being multilingual is a wonderful thing though. There's some people who might look at speaking another language and think "well what use is that?"... uh, loads. If you're passionate about learning languages and can speak more than one, it opens up SO many career options for you.

Try learning Chinese! Its a very tonal language. I had a Chinese friend give me an example. He spoke the same word 3 different ways and each way depending on which part of the word was accented had a totally different meaning. You might be trying to say your grandmother is very nice and end up saying i'd like to screw your grandmother. :)

Ill use them online and to understand weird Youtube comments

Greek,Spanish,french ,Portuguese English.

It's completely normal to want to learn languages and learn one at a time. Studying multiple languages every day is weird though. You won't do a good job learning them by squishing them together.

i spent 8 years in Europe. whats wrong with learning a new language? now if you are never going to Europe thats sort of crazy . that would be torture .