It is very important to save your work regularly. A saved piece of work is easily recovered if something goes wrong. To save your work use ‘Save’ or ‘Save As’ from the 'File' menu. Do not rely on auto save.
The first time you save your work the 'Save As' dialogue box will appear. Name your file and choose which folder to save it in. From now on, when you save your work it will overwrite the original file with your changes. To prevent this from happening, use ‘Save As’ from the 'File' menu to save a copy of your work.
Use 'Save As' to:
Use 'Save' to: