What do I need to know before moving to Guadalajara?

"1. Spanish is the official language in Guadalajara, so it's a good idea to learn the language before moving there. 2. Make sure to know the area you want to live in, since Guadalajara is quite large. 3. Research the local climate in order to prepare for the weather and dress accordingly. 4. Familiarize yourself with the local customs to ensure respect and good relationships with locals. 5. Get used to local dishes and the type of food you can find in Guadalajara. 6. Educate yourself about the different payment methods and currencies used in Mexico. 7. Look for certified and reputable healthcare providers in advance to ensure your medical needs are met. 8. Look up important documents that are needed for residences in Mexico, such as visa, residency permit and others," remarked another expat who made the move to Guadalajara, Mexico.