Picasa is a free image management software introduced by Google, and it has now been upgraded to version 2.0. You need to download and install the client to use it normally (download address: download photo software from Google). After Picasa is successfully installed, it can immediately start working, organizing all pictures on the hard drive into the "folders on disk" album by date.
Picasa Web Albums is a new feature added by Google a few months ago. Run the Picasa software, click the "Sign in to Web Albums" button in the upper right corner of the interface, go to http://www.98picasa.cn/, enter your Google account name and password, and you can have your own web... with just a few simple steps.