How to start from Scratch ?

[eluser]woits.com[/eluser]
Oooppsss... Its mean that it is something like script and we can make changings as much as we want? It has builtin functions etc all??? M i right? If i need to start any project so i will need to rename codeigniter folder and i can use any project name etc.... to use it as multiple projects? may i need to copy all Codeigniter files to that directory ?

like
http://localhost/project1/
http://localhost/project2/

etc all?