Here's some websites I found:
Guatemala- https://www.oanda.com/currency/iso-currency-codes/GTQ
Peru- http://www.machupicchu.org/peru_currency.htm
Costa Rica- https://costaricamonkeytours.com/costarica-travelguide/currency/
Hope this helps :)
Querer means to want
Te quiero is a way of saying I love you/ I care about you/ I want you