Hi Mary,
As long as you have an updated version of Adobe, you should be fine! But if you’re worried you can always copy and paste your answers in a Word Doc! I know I’ve done that sometimes when I was concerned about losing my work.
And I’m glad you’re loving what you’re learning so far! And I agree — it would have been great to know this stuff much earlier in life! Now that you know, though, hopefully you can spread the word to young people who may need to hear it. 🙂