Many Google Groups activities don't require you to have a Google Account, while many others do. For a brief description of which activities require an account and which don't, please see below:
Activities that don't require a Google Account:
- Reading posts in public groups
- Searching for groups, posts, or authors
- Posting to groups via email if they are unrestricted or you're already a member
- Joining a public Google Group via email
Activities that require a Google Account:
- Creating and managing your own Google Group
- Posting to groups via our web interface
- Creating pages and uploading files
- Subscribing to a Usenet newsgroup and receiving posts via email
- Joining a Google Group via our web interface
- Changing your subscription type (No Email, Abridged Email...)
- Reading a restricted group's posts online
If you would like to create a Google Account, please visit the Google Accounts homepage and follow the directions on that page. If you're a previous Google Groups or Gmail user, you can use your existing Google Account to log in to Google Groups. If you have different Google Accounts for different products, you can't be signed in to those accounts simultaneously. If you have a Gmail window open, you'll automatically be signed in using that account when you open a Google Groups window. If you wish to use your other Google Account instead, you'll first need to click the Sign out link in the top-right corner.
If you'd like to use Google Groups without creating a Google Account, you can learn how here.