Insalling planet minecraft project

thanks I have done that but when I go onto my world I don't know what to do from there

Ok thats a good question!
First are you on mac or pc?

PC:
Open Windows Icon and Search '%appdata%'
Click .roaming
You should see a .minecraft folder!
Drag it into saves!
Done!

Mac:
Open Finder
Hold: shift+command+g
Enter '~/Library/Application Support/minecraft'
Drag it into the saves folder!
Done!


-Chris