https://technotip.com/9335/get-your-x...
https://apps.xumm.dev/
Create new application and generate App ID and App Secret for your project, whch uses XUMM API.
This video tutorial shows how to use the XUMM Developer Dashboard.
List of all XUMM / XRPL Development Video Tutorials:
https://technotip.com/9332/working-wi...
While following these video tutorials, occasionally you may have to create new XRPL accounts and make transactions and check the results: you can use OsmWallet for that.
OsmWallet is a non-custodial wallet and it is a browser extension like MetaMask, but for XRP Ledger. https://osmwallet.io/