Well there are many different websites to use. Also I've found in video games you can find people from all over the world. But that really only applies if you happen to like video games. If you do go on a website or something and want to ask if its ok to ask loads of questions unless you don't ask all at once. Like how I like to hear how my friend lives, and since he is from another state [US state] I tend to slowly ask different questions on different days and stuff.

Yes but usually me and my friends as a joke if we are acting weird, so in that sense it could also be used for what's up [what is wrong]. There is also a few other things that statement could mean though

Yes, it could mean to catch a cold but it could also be slang for calm down but 'chill pill' might be used more so if it was slang

Similarly, I have asked this question in my german class, and my teacher informed me that 'nicht' translates to 'not' and 'kein' translates to 'no.' Meaning that it depends on the case.

The question 'What's to pay?' is one i have never really heard [ever] but it seems as though its reffering to what you have been through and such. I am thinking this because 'pay' could be asking about what you have 'payed' or in a sense gone through. Where did you find that dialogue though?