Welcome @Sanityfree !
If you ever have Scrivener questions, feel free to start a thread. A lot of smart, generous people here to help you out.
Be sure to go through the Interactive Tutorial (from Scriv’s Help menu). Even if you don’t remember all the details, it’s a fantastic overview of what to expect from Scrivener.
When you have some downtime, read this post I wrote a while ago about backups. It was for Scriv v1, so the menu options have changed, but all the concepts still apply. Understanding how Scrivener’s built-in backup system works will help avoid the tragedy of lost words. 
If you find it difficult to find beta readers, consider checking out Scribophile.
Best,
Jim