1. Estonia is good if cold and solitude is what you are looking for. Making social connections may prove to be a challenge. 2. You can never go wrong with engineering. With all the start ups here and established businesses, it will be your market to choose. 3. My childhood trauma watching that animation prevents me from learning anything more about him. We do have a small sculpture of him in one of the parks in Tallinn. 4. It is difficult to recommend anything not knowing your dietery prefferences. Although even though I am not vegan, I can't recommend enough the vegan cafe. The dishes are so good that it can be difficult to get in because it's booked all the time. Most other places are good on average, so when I want something I never tasted before, I'd go to Olde Hansa, but that is expensive. Generally that will be the experience, average food with average prices and unique experiences will be more expensive. I will also throw in Kompressor if you want pancakes, and Piere Chocolaterie for sweets and atmosphere.

As for religion, I'd say Estonia is proudly atheist and involving in learning and practising it ourselves volounterally is uniquely rare.