Just recently started using the Gingerbread man tutorial

Hello there, i recently started using the ginger bread man tutorial in the manual .I saved some files on Blender while i was following the tutorial but later decided to start a new file and start following the tutorial from scratch .Now should i delete the previously saved files or what? How can i start making a new file again to start from scratch again? any body?

I think that that coice is yours. If you wish to keep the old files, then you should rename the new ones. If you wish to erase the old files and just start over, select the file(s) you wish to delete in the file browser and then hit the Xkey.