(American) English: This is my 1st language. I speak it at a native level
(Brazilian) Portuguese: The 1st "foreign" language I encountered. As a child, I learned a lot from my father, a native speaker, but also studied it on my own as a teenager. Despite years of exposure, to this day I never really attained fluency, primarily due to a lack of speakers in my area & because I've always been focused on another language. I will go back to this language later & try to attain true fluency.
French: This is the language that got me interested in languages. I took French courses all 4 years of high school & also a semester in college. I didn't really do any self study, though, & that's probably why I never got fluent. A few years ago I quit learning it. I just completely lost interest in it. I currently stand as a "low intermediate" & have no plans to go back learning it.
(Latin American) Spanish: I first encountered this language during high school. There were a lot of Latinos at my school so I heard the language daily. I decided to start learning it on my own. I got to about an intermediate level before I lost interest.
Italian & Romanian: I started studying these language while I was in high school because I was also studying Portuguese, French & Spanish. I didn't study either language for very long, though. I can understand some written Italian mainly because of its similarities to Portuguese & Spanish. I know almost no Romanian.
Japanese: The first non-Italic language I got interested in. Around midway through high school I fell in love with this language. I first taught myself kana & then started learning on my own. At that time, I wasn't exactly an expert at learning languages so I didn't progress much. I took a course my final year of high school & also a semester in college. Currently, I'm still only an intermediate because I never focused completely on Japanese (until recently). But I do have a strong knowledge of kanji. This is the language I'm actively learning.
Korean: I got into this language because I had heard it was similar to Japanese. I taught myself hangeul in high school & took 3 semesters in college. I also learned a lot from spending 10 months living in South Korea. Currently, I'm an intermediate & will return to it after I reach fluency in Japanese.
Thai: This language I first encountered during late high school. I really liked the orthography so I taught myself that & also lots of words & phrases. After some months, though, I quit to do other languages. To date, this is the only tonal language I've studied that hasn't given me problems. I wonder why...
Cantonese: I studied this language for several months about 4 years ago. But I eventually quit because I felt like I wasn't getting the tones right.
Vietnamese: Another one I studied about 4 years ago for a few months. Again, the tones killed me! I also didn't like the grammar so I quit.
Icelandic: I studied this one for about a month a few years ago. Didn't get too far, though.
Czech: I'm not really sure when I started learning this language. Somehow, I developed an intermediate ability in the language. To this day I can understand a lot of written Czech. But, I have no plans to continue it.
Malay/Indonesian: I first encountered this language while living in South Korea. I hated it at first, but then started to like it gradually. I never really studied this language very intensively; mostly on-&-off. I'm not sure if I'm going to continue with this language later on or not.
Swedish: Also encountered this language while in South Korea (I met several Swedes). I like the sound of it & gave it a shot. I learned to read it pretty good but never could speak it well.
Uyghur & Uzbek: A couple of years ago I read about Turkic languages & decided to give one a try. I started with Uyghur but quit very soon because I didn't feel like learning the Arabic abjad. Then I started Uzbek. I really like the language a lot & studied for a a solid 2 months. But after I read about Uzbekistan's terrible human rights track record I quit the language.
Mongolian: I studied this language for about a week earlier this year mainly because I liked the idea of knowing it. But, I quit it because I don't like the sound of it.
My current plan is to continue Japanese until I get fluent in that. Then, I'll go back to Korean to get fluent in that. After Korean, I'll go back to my Portuguese to get that fluent. What's after Portuguese? I'm not sure. I'm torn between Indonesian, Sinhala & Russian. Any ideas?