Hi bonniegiddens!
Thank you for reaching out to us, we're happy to help!
When you go to the Canon site to download drivers and software, everything has a description for what the file is, and what it does. You just have to click the "Select" button and it will give you all of the information. The site will even let you know if the software is optional.
You can find the software and drivers by clicking HERE
If you find that you need additional help, our US-based technical support team is happy to help at 1-800-OK-CANON (800-652-2666) from 10am to 10pm (ET) Monday through Friday.
We hope this helps