Questions on certifications.

So I have to have knee surgery and will be laid up for a while with little to nothing to do. I’m a framer primarily but the company I work for does do some finish as well as tile. My question is while I’m laid up are there any classes I can take to get certifications anything for carpentry related development? I know my boss was going to have me take a class to get spray foam certified but I can’t remember the name of it.