API Case Study Needs Understanding

I need to work on a problem case study, but no idea where to start. It would be helpful if you can point me in right direction for below problem

Retrieve and persist a list of random cities distributed worldwide (we expect this number to consist of several thousand cities). Furthermore, create a framework capable of requesting weather, and currency/forex data using but not limited to open source API’s like: http://ift.tt/13oXDoi; http://ift.tt/1klGd7o; Create a data generator which builds on the city data previously retrieved. This tool should generate a dataset of randomised people (this set is expected to be in thousands), and populate the following fields: “Name, Surname, Address, City, Telephone, Email, Date of birth, Sex, Marital Status, Nationality, Country of birth, Gross annual income, and Currency”. This data must be built against standard regex patterns.