How to go about organizing an extremely large project?

Ok, I have a bit of a project going on and I guess I’m stuck, I have been for the past few days.

Are there any official/named methods for organizing very large projects. e.g. building an Olympic park, putting something on the moon, making a database of every person on the planets height, etc.

Basically, I have an idea but the logistics of it all is a bit much for me. I am usually quite good at putting together plans in my head and then down on paper, but the project has so many variables and things that need doing, that I can’t make a proper plan.

I would say what my project is, but as it is nothing proprietary I can’t actually say more or the idea will get stolen. However, if you want an example, how could I go about making a plan for a project building a new library that contains millions of books in an alphabetical order, or how could I go about making a plan for creating a global phone book complete with names and addresses.

How can I create the best plan to orchestrate my project?

Are there any methods or systems with names for dealing with organization that I can look up?