Cat-astrophic days celebration-train

Ok, so here's the deal. I had some very cat-astrophic days speaking in SG-manners. On saturday I had a job interview that went very well. Today I preached at church on a very challenging topic in a pretty unusual way. This went well too. And then I went to my hometown to meet with a friend and watch a tennis match live in the stadium for the very first time. And it wasn't just any match, it was the finals of the Swiss Indoors, a ATP World Tour 500 tournament. By that I not only got the chance to actually see Roger Federer playing live, one of the best players this sport has ever seen. play live. His opponent was Rafael Nadal and so I got a final with two players that are thought to share one of the most epic rivalries in sport at all. And on top of that, they both played an awesome match, with the perfect winner.
And as if all of this wouldn't be enough already, I had an absolutely major win-streak on Steamgifts with nine (!!!) wins within 3 days.

So yes, the cat was very, very nice to me on Steamgifts and in real life. And therefore it's payback time! I created a cat-astrophic thankfulnes train to share my joy.

To better keep out greedy people without any care for the reason of my giving you have to answer 5 very simple questions.* They're all easy to answer by reading my explanation and with one little and obvious googeling. Users on my wishlist or from the groups "Positive Thoughts" or "German Giveaways" can access the train directly by using the ticket in their exclusive Giveaways.

Here you get your ticket to the train.

The train is on its rails until next Sunday and starts low with Lvl 0 and goes up to Lvl 4.

* the questions are intended to be simple. It is not a puzzle! If you're stuck nevertheless or if one of the answers/questions is too unclear, please write a comment! For help with Q2 (especially if English is not your mother tongue) refer to this comment for help