Q: I cannot open App Store,iBooks store or safari,my Facebook,Pinterest and yahoo weather also doesn't works even when the wifi is connected only chrome works.

Hello there, L1180.

The following Knowledge Base article offers up some great basics and Wi-Fi troubleshooting specifics:

iOS: Troubleshooting Wi-Fi networks and connections

http://support.apple.com/kb/ts1398

After following the initial steps, you may want to then look at this section:

Unable to access the Internet while connected to Wi-Fi

1. If you're using a public or commercial network, you may need to log in or subscribe.
2. Check to see if you have a self-assigned IP address:
   1. Tap Settings > Wi-Fi and locate the Wi-Fi network to which you're connected and tap .
   2. If your IP address is 169.254.xxx.xxx, you may not be able to access the Internet.
3. If you do not have a self-assigned IP address, see if other Wi-Fi devices on your network have Internet access.
   • If they do not, consult with your network administrator or ISP for further assistance.
   • If they do, reset network settings on your device by tapping Settings > General > Reset > Reset Network Settings. Note: This will reset all network settings including:
     • previously connected Wi-Fi networks and passwords
     • recently used Bluetooth accessories
     • VPN and APN settings

Thanks for reaching out ot Apple Support Communities.

Cheers,

Pedro.