Installing a Windows font library into Illustrator

Hi everyone! I'm a student learning to use Illustrator. I use a laptop that runs Windows. My family has a huge collection of fonts saved that they ahve purchased from different places like Blambot and Font Diner. When I use any program, like Word, I can see all of the fonts that we have in the list. I started using Illustrator and all I can see is Myriad Pro. How do I access all my Windows fonts? I know I can load unlimited fonts with my subscription but that seems like a total waste when I already have a lot. Please help. Any advice would be really appreciated.