Yes you can get WiFi on most android tablets.
It is basicly a wifi hotspot from an android device. It uses the mobile data on your phone and sends it through wifi so you can use your mobile data on your laptop/other wifi abled devices
no
Use the android phone.If it works its better.
yes... For example, if you have a wifi network, you can enable wifi on the android phone and then upload photos from the phone. Also, I have not really tried it, but OFF topic, with wifi you can make a phone call on your android phone even if per say you are no longer with the cell phone provider
If you have Wifi, Youtube.
Android
yes
Yes. and Yes ...
Click on a network and select forget
No, but it depends if you have data
use 3G instead wifi