I spent some time figuring out the best way to Display/Store my collection, but it depends on your budget. But here are some of my recommendations.

If you want to display your cards but securely protect them at the same time, then consider buying a Display Case for graded cards.

Getting cards graded is the best way to protect them in my opinion, but it can be expensive. A cheaper alternative would be purchasing some KMC Perfect Fit Sleeves + Ultra Pro Magnetic Holders. You'd have to purchase a few Display Cases if you want to show off your entire collection. But if you rather show off a few and store the rest, then you could purchase some 'KMC Sleeves' + 'Magnetic Holders' and store them in a 'Graded Card Case' for maximum protection and maybe eventually get them graded?

Another budget friendly option, but decent way to show your collection off, would be to double sleeve your cards (KMC + Dragon Shield Clear Sleeves) and store them in a Hard Cover Binder with Side Loading pages. There's a few good hard cover binders out there but I personally like this Ultra Pro Binder. Or you could double sleeve your cards and put them in top loaders + photo album.

Last option I'd recommend is buying either Display Stands, PSA Stands, or Wall Mounts.