I apologise if I am posting my question in a wrong place. If it is then kindly direct me about which sub-site this should be posted.
When I post any question on any Stack- Exchange site, I mark the check box at the bottom, which says "Email me new responses to my posts". But every time it gives an error "the email address you entered is invalid,".
- (1) If my email is invalid then how did I register with stack exchange.
- (2) If there is some 'special' place to write 'that' email address, then where is it ?
- (3) Is there any sort of tutorial / youtube video which helps one to get familiar with Stack Exchange itself, especially its interface ?