Try using the internet by typing the keywords into a search engine and keep searching until you find what it is you are looking for. For example, try using www.google.co.uk
How Can I Access Greek Births, Deaths And Marriages?
Go into your local library and ask for some assistance on what you are looking for. Or go into a book store and buy a book. You will have greater success there than at the library. It does mean that you will have to read a book :)