Can I learn QuickBooks 2017 Nonprofit that is already set up in a company?

What do you mean with "learn"? You may keep using any outdated QB Desktop for good as long as your computer supports it.

Hi carine-b-locher-,

Yes, you can. You can even create your own company file for your practice. Then, if you need references, simply press F1 to launch the Help window, and search for the topics you like.

Let me know if there's anything that we can help you.