Hi there, @cath burns.
You've come to the right place. I'm here to provide some overview on how you can upgrade your QuickBooks.
When upgrading your software it'd be best to have the latest version which is the 2019 versions. To know more about the comparison of each type, please check out this article: Choose your QuickBooks Desktop product.
Once you've found the version that will suit your business, you can start upgrading or downloading it directly from our website.
Also, here are some helpful articles about installing and restoring back up for your future reference:
If you need additional assistance with this process, feel free to reach out our Customer Care Team. They have extra tools like screen-sharing that can help you with the steps.
To reach them:
- In your browser, navigate to https://help.quickbooks.intuit.com/en_US/contact.
- Choose QuickBooks Desktop.
- Select the issue or topic.
- Click the Green Phone button to see the support number.
This should guide you in upgrading your QuickBooks.
Keep me posted if you have any other questions with this concern. I'm always here to lend a hand. Wishing you and your business continued success.