When creating a new entry, click the key icon next to the password field to open the password generator. Configure the settings and click "Generate" to create a secure password.
Create folders to organize your passwords. Right-click in the folder list and select "Add Group" to create categories like "Work", "Personal", "Social Media", etc.
To sync your KeePass database across devices, save it to a cloud storage service like Dropbox, Google Drive, or OneDrive. Then open the same file on your other devices.