There are many different Bitcoin wallets to choose from and the best form to use is a personal decision. You can check out our help center post, Bitcoin Wallets 101, to inform yourself about the different types of wallets that are available.
While it is possible to store bitcoin on the OpenNode platform within the supplied "Bitcoin Wallet" on the dashboard, we recommend that you set up an external Bitcoin wallet if you plan to hold your bits long term. Setting up a private, personal Bitcoin wallet will allow you to more easily spend, sell, and manage your Bitcoin balance.
Once you've set up a wallet, make sure to read our help center article on Bitcoin withdrawals to learn how to move bitcoin from your OpenNode account to your Bitcoin wallet!