The official language spoken in Greece is Greek. Ancient Greek was spoken 'til 4th Century B.C. and remains one of the most important extinct languages today.
€25 is approx $30
The time zone in Greece is Eastern European Time (EEST)
A pint of local beer in a taverna in Greece will set you back around €3.50 (approx $4.33), and is often less on the party islands.
Go fully authentic with meals from markets and street stalls, which is also the cheapest option: it'll cost less than €15 (approx $18.55) to fill your bellies there.
You can walk around a lot of the smaller cities/islands, but if you need to catch public transport, a one-way ticket only sets you back around €1.40 (approx $1.73). Ferries across to the islands can cost between €4-€10 (approx $4.95-$12.37)
Taxi tariffs start at around €3.50 (approx $4.33) and they add about 80c (approx 99c) for every km.
Travelling solo or on a budget? Grab a dorm bed from €13 (approx $16 a night) or a domatio (Greek B&B) for less than €60 (approx $74.19).
Willing to splash out a bit more on your digs? A double room in a mid-range hotel costs between €60-€150 a night (approx $74-$185)