How to setup gmail, IMAP

My gmail has chabged.
Is it to do with the setup?
This is what it looks like.
General
Labels
Inbox
Accounts and Import
Filters and Blocked Addresses
Forwarding and POP/IMAP
Add-ons
Chat and Meet
Advanced
Offline
Themes
Forwarding:
Learn more

Tip: You can also forward only some of your mail by creating a filter!
POP download:
Learn more
1. Status: POP is enabled for all mail that has arrived since 8/28/06
Enable POP for all mail (even mail that's already been downloaded)
Enable POP for mail that arrives from now on
Disable POP

2. When messages are accessed with POP

3. Configure your email client (e.g. Outlook, Eudora, Netscape Mail)
Configuration instructions
IMAP access:
(access Gmail from other clients using IMAP)
Learn more
Status: IMAP is disabled
Enable IMAP
Disable IMAP

Configure your email client (e.g. Outlook, Thunderbird, iPhone)
Configuration instructions