أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
1) Go to your neighbour home and make friendship and take password. Simple
You can do it using commview for wifi software and backtrack. Also, it depends on the wifi encryption if WEP we can hack it easily, but on WPA or WPA2 it's very difficult.
This is an out of scope question and not related to sucha speciality like purchasing or admin!
you can use commview for wifi but if u r not advanced in that field >> u will not get any progress (it's not easy at all)