Layers in Storyline PLAYER - and glossary links

Hello Emily, 

Thanks for reaching out! 

Allow me to address each of your inquiries individually. 

1. You can make individual layers appear on slides using the 'Show Layer' trigger, but you cannot call layers that belong to other slides to appear on a slide. 
2. There is no way to convert slide layers into individual slides. 
3. You can check out this article which explains the ways to minimize the risk of file corruption, which is the only thing that can cause any real damage to your project file. If your triggers are properly configured, then they should function normally within the project without any issues. 
4. The built-in glossary of Storyline 360 doesn't support any interactivity, but we have examples that you can use to design a glossary that your learners can interact with.

Let me know if you need anything else!