As nostr:npub1rqlwyvfshkj2778cc0lv46geppfhgxc73uqfcc0zpz3gy5d07uasj6c9tx correctly mentions - Grab an app that will give you a built-in wallet to get you started quickly. By the time you get the hang of things (which won’t take too long at all) you will be able to maneuver through multiple apps and wallets…and settle on the one you prefer. https://primal.net app gives you a good start.