Well, to find the nearest Comic Con, you could start by looking on event websites or using apps that list such conventions based on your current location. Sometimes local newspapers or community forums can also have information.
It's hard to say. You could try looking in busy shopping areas or areas known for having a lot of entertainment stores. Sometimes they're located near colleges or in large malls.
The nearest Xinhua Bookstore was in Beijing City. Beijing City was a famous historical and cultural city with rich cultural heritage and historical buildings. There were many classic literary works in the bookstore for reading and tasting local delicacies.
Since I don't know the 'uncle nearest story', I can't say what the meaning behind it is. It could be a story full of family values if it's about a family uncle, or it might have some moral lessons depending on the plot.
It depends on where you are. You could try using apps like Google Maps or asking people in your neighborhood. Sometimes local libraries or shopping malls might have comic book stores nearby.