Wireshark · Wireshark-users: [Wireshark-users] I am new

["Meena Zala" <meena.zala@xxxxxxxxx>]

Hi all, 

I am new, and I am interessted in Wireshark. I also read the booklet, but still I have some questions. Hope you can help me. 

1. What is Wireshark for? 
2. How do I start the protocol? If I go on start (option capture) no data are being captured. 
3. How can I capture my internet protocol? If I keep wireshark running, and I go on my email, it will show my password? 
4. Can I capture other computers internet protocols? How? Can I capture also someone who is not on the network?
5. How can I find out the IP Adress of an other user? How do I find out my own IP Adress?

Thanks in advance... 
mohini