Buy Nintendo Switch Online 12-Month Individual Membership from the Humble Store
Nintendo Switch Online: a Complete Membership Guide
You need a paid membership to Nintendo Switch Online to play course world in Super Mario Maker 2. Pretty sure you could access course world at no extra cost in the original
How to Set Up a Nintendo Switch Online Family Membership - Nintendo Switch Guide - IGN
Nintendo Switch Online Membership - 12 Months | Switch Download Code : Amazon.co.uk: PC & Video Games
Nintendo Switch gift cards: where to buy Switch Online memberships and eShop credit | GamesRadar+