Learn on how to connect to Microsoft OneDrive, Google Drive, Amazon S3, Dropbox, FTP and WebDAV servers in Finder and work with online files the same way as with local ones.
As exciting and reliable as iCloud backups are, it’s better that you understand exactly what is being backed up for you. You might be surprised to learn what information doesn’t get copied as part of the backup: things like your contacts, mail, notes, files you store in iCloud Drive or photos, if you have iCloud Photos turned on.
Understanding what is Keychain is important because it not only helps with passwords — it automatically saves and auto-fills things like credit card details (including shipping info), WiFi logins, social media account names, and more.
An additional perk of having iCloud is that it comes with a free email account. So if you have an Apple ID, you by default have an iCloud email account.