1. Click on the wi-fi icon in the menu [mostly in middle screen if you havent customised the menu items].
2. On the next screen it wud say 'Tap here to turn Wi-Fi on' and there wud be round button saying Wi-Fi.
3. Tap on that to switch on wifi.
4. Now on the bottom menu bar Click on Search
5. It will show u a list of wifi network available.
6. Click on the one u want to connect to [A menu pops up]
7. Click on Add in the menu
8. In the form enter the network key [password u need to connect to ur wifi]
9. Depending on ur other settings of you Wi-fi router, you may need to enter some details in the form
10. Once done, click Save
11. Now u r ready to connect.
12. Click on the network u want to connect to and click on connect.