What are the visa & residency requirements in Rome?

"In order to visit Rome, a visitor must obtain a visa from the Italian Embassy or Consulate in their home country. The visa application process requires the submission of a valid passport, a completed application form, a passport-sized photograph, and proof of sufficient funds to cover the duration of the stay. Depending on the purpose of the visit, additional documents may be required. In order to obtain residency in Rome, Italy, an individual must apply for a residence permit. This process requires the submission of a valid passport, a completed application form, a passport-sized photograph, proof of sufficient funds to cover the duration of the stay, and proof of employment or other source of income. Depending on the purpose of the stay, additional documents may be required. Once the application is approved, the individual will receive a residence permit valid for a period of up to five years," said another expat in Rome, Italy.