(Hahah you really are a viking! xD)
That's really cool! My brother was just asking me yesterday about if he should learn Norwegian or Swedish. In hindsight, I was probably the worst person to ask because I said to go with both. There aren't many people in my friend group that are interested in learning German, so I always find it cool to find someone who does or already speaks it. I'd have been nervous going to the country, though; My props to you!
I was the same way when I read Le Petit Prince after a few years of taking French! Sadly my speaking skills are lagging far behind my reading skills since I don't have anyone to practice with and I can't find any speaking groups near my area. Hopefully, I can spend a semester abroad somewhere, but I still have to transfer to a school that has my major first.
Why Mandarin or Arabic? Also, how are you learning Italian? Are you taking classes, learning from a language partner, etc?
Arabic seems very intimidating to me! xD I had a friend that said that the writing system was hard for her to get used to, especially when she was the one writing it. There are a lot of people who speak it though, so it's a great language to take if you want to go into communications or something to do with people. (At least, that's what she told me. xD) Then again, a lot of intimidating languages have their own special points when you start learning them. People get tripped up on Chinese because of the different tonal pronunciation, but most people can figure out what you mean using context.
1. I would advice your brother to have a look at this video:
(But you're right, I don't think it's a good idea to study two languages who are so similiar at the same time either ;) )
2. I went to Germany together with my family. Nervous or not, going to a country where the language you are studying is being spoken by a large group/the majority is the best way to excel in understanding and being able to produce(write, speak) the language.
3. I am sure if you look in the right places, you could find a native person from Poland to speak with over skype. Most likely, you will have to find someone who would be interested in getting something in return from you. As in; someone who wishes to learn English or Tagalog.
4. Why Mandarin or/and Arabic?
One of my major motivations behind learning languages is to be able to learn more about the culture of wherever those languages are spoken. And Arabic and Chinese are somewhat "world languages" as far as I am concerned, outside of the western world. Learning languages that use "wierd" scripts, that supposedly are very hard for a westerner like me, is also another great motivation. Being able to read news, history and so on written by natives from so called "enemies" of western societies is yet another one.
I think one important thing when you just start out learning either Mandarin or Arabic is to just accept the writing system and tonal differences from your native language for the way they are. Be very patient and put in that hard work. For me, it's slowly grinding and learning new words that work in the long run.
5. I am learning Italian by listening and reading through a course called Assimil's "Italian With Ease" - a great beginner course, if you ask me. I don't do any of the drills, I just read through the text once in my head, check it with the english translation that is to the right of the target language. Then I listen through the dialouge's audio three times while I read only the Italian.
Other things I do is that I listen to podcasts done by SBS radio. I've gradually started to understand more and more of what I listen to.
Last but not least, I read through some articles every day on a site called tuttomercatoweb.com. Most of them are very short, which is good for a beginner like me. They also contain good information about a subject I'm very passionate - Italian soccer - and if it is one thing I've learned from listening to people who have learned a lot of languages on youtube, it is that you should learn the language by reading/listening to something that interests you.
OH YEAH! I also learn Italian by watching the Italian dubbed version of Lost, LOL! I'm on the second season. Not sure how effective it really is for my learning, but I'm giving it a shot. Not a tv series I would watch for any other reason that to learn Italian.