Hi, I'm the current author of Vintage 101 on MTGGoldfish!
I will echo what @desolutionist says. Renting is gas. I would never get to try all sorts of things in this format without my rental sub.
I will also put forth Cardhoarder as well as another rental service. They do have a bit of a wait list (because the service is so popular) but they have stellar service and I feel they're more flexible to work with than Manatraders is (I've heard plenty of bad PR stuff about Manatraders, tbh).
The only caveat is that CH is a weekly fee but in the long run you are paying only for what you think you need and can pause/change as needed (say you need to pause for a week, you can do this) and also paying for a solid customer support experience as well.
Enjoy! This was a big article!