If it does I can't find it Do you think this is not a good idea for a novice computer user to download this program?
Depends.
You give very little information. Please tell us what browser you use. Look in the Options dialog box of your browser. It will have a text box with the name of the path where it stores downloaded files. If you use Windows, you can also open the Explorer, click Find, enter "OOo_2.3.1_" in the search box (without the quotation marks) and let it search your entire hard disk. It's bound to find it.