Wintergreen - Uses and methods for preserving

Greetings, everyone. I'm new to this community, as well as wildcrafting/foraging, although I know plants rather well, as I've always been close with nature.

Yesterday I encountered some common wintergreen (Pyrola minor). A quick search showed that it muight have some use as a herb, however I couldn't find much information on how to preserve or use it. Should I use it fresh, or perhaps dry it?

I know it's also a perennial plant, and in my opinion a very pretty one at that, so I thought I'd also ask if anyone has experiences in cultivating it, indoors or outdoors.

Thanks in advance!

~Yarrow