I would like to make a copy of my project. I would rather not start doing it from scratch by adding files and references, etc. Please note that I don\'t mean copy for deploy
It is highly NOT ADVISABLE to copy projects at all because the some config files formed internally like .csproj, .vspscc etc. may (and most probably will) point to references which belong to previous solutions' location and other paths/locations in system or TFS. Unless you are an expert at reading these files and fixing references, do not try to copy projects.
You can create a skeletal project of the same type you intend to copy, this creates a proper .csproj, .vspscc files. Now you are free to copy the class files,scripts and other content from the previous project as they will not impact. This will ensure a smooth build and version control (should you choose to be interested in that)
Having said all this, let me give you the method to copy project anyhow in a step-wise manner:
You may now have to resolve a few build errors probably with duplicated/missing references and stuff but otherwise it's as pristine in logic and structure as you expected it to be.