What places combine well with Cordoba and Central Sierras?

Mendoza in Argentina’s prime wine-producing region (daily direct flights 1hr 15mins); Santiago, the capital of Chile, (daily flights 1hr 30mins). 

How do I get to Cordoba and Central Sierras?

A flight from Buenos Aires to Córdoba takes 1 hour.

What are the festivals and cultural and sporting events in Cordoba and Central Sierras?

FICA Craft Market: First three weeks of Apr, close to Chateau Carrera stadium, Córdoba.

Book Fair: This takes pace in Córdoba in mid-Sept and attracts some well-known authors.

What's the time difference between Cordoba and Central Sierras and UK?

GMT -3 hours. Sometimes daylight saving is observed in the summer, but this is announced ad hoc on a year-on-year basis.

When's the best time to visit Cordoba and Central Sierras?

It can be stiflingly hot in summer, Dec-Mar. Outdoor visits are much more pleasant in the spring and autumn months, with plenty of sun.

What's the official language of Cordoba and Central Sierras?

Spanish

How do I get local currency in Cordoba and the central sierras?

Argentine Peso. Notes can be withdrawn from ATMs (many on Plaza san Martín) using a UK credit or debit card. Limits may be lower than your UK bank allows. There are also banks and money exchanges (casas de cambio)  where you can exchange US dollars cash; rates for euros and sterling are harder to find and frequently poor.