I have brought a google nexus tablet. how do i connect to the internet. i do not have a a modem at home

If your Tablet Nexus 7 did not connect to the internet try to refresh the connections. Open the menu and hit the settings button. Click the Wifi Off and open the page. Scan for the internet provider you are currently connected then click forget. Back to the main menu. After 10 to 20 seconds click the wifi icon and reconnect.

Follow these

https://support.google.com/nexus/troubleshooter/3337561
http://www.tech-recipes.com/rx/28928/google-nexus-7-tablet-hard-reset-or-reboot/

and if there is no solution contact the help team

https://support.google.com/nexus/answer/3053039?hl=en-AU

Follow these

https://support.google.com/nexus/troubleshooter/3337561
http://www.tech-recipes.com/rx/28928/google-nexus-7-tablet-hard-reset-or-reboot/

and if there is no solution contact the help team

https://support.google.com/nexus/answer/3053039?hl=en-AU

then set up wifi access point (internet) and then it will work

Try setting the tablet to Debbugging Mode<> Setting Developer Options

I don't have a nexus but have had a similar problem with a cellphone. If you go into the settings you should look for a link to change the connection type, i.e. some products will connect as a storage media device allowing you to browse files or as a modem to allow you to share the 3G connection or in propriety mode where it will connect as a Nexus to the bundled software.
With the Blackberry Playbook you have to install specific drivers stored on the Playbook before it is even recognised correctly. Please check if you have installed the drivers correctly. They might come on a CD boxed with the Nexus or if you connect the Nexus you'll find a new drive and it will contain an exe to install drivers so the PC can recognise it. The later was the case with the Playbook. Alternatively try downloading new drivers from the support page for your particular Nexus model. Web downloads are almost always the latest version of drivers and the one shipped with your Nexus may not be properly compatible or flawed. Hope this helps.

Yes, after you make the connection, start your browser. The login screen comes up first after that.

Many Internet / Phone carriers provide service via USB. You may need a micro USB adapter. Test at a local vendor before purchase.

They also hotspot devices. A small mobile wireless internet router. This may be the best solution.

You can even configure a cell phone to provide internet.

Are you trying to connect the Nexus to the internet via your computer? using ad-hoc wifi connection?
I followed these instructions and was able to make the connection.

Hope it helps.
Dan