Barcelona weekly: Q&As for newcomers and travellers

Hi! Welcome to the Barcelona Weekly thread.

This is the place to ask questions about the city, or to get info related to moving here or visiting.

Rules for posting:

1. Read the wiki before posting a question. The wiki is written by locals, and it has proved really useful for lots of visitors. It covers stuff like: where can I watch my favorite sports game? what metro ticket should I buy? what language do I need to speak? what's a good site for apartment hunting? what's a good restaurant in Eixample? what are some cool 'unknown' places to visit?
2. Search for older threads answering your question.
3. No posts requesting cannabis club membership or purchasing/offering drugs.

This thread is posted automatically every Monday morning.