I need help with my Email

ambersb231 (9:20:01 PM): i'm having computer problems
ambersb231 (9:20:02 PM): can u help?
ambersb231 (9:20:17 PM): i cant get into my inbox when i click on it it takes me to one of those "this server cannot be found"
its really annoying and i have about 300 emails in it... i use yahoo, and it has happened before but i just ignored it and made a enw account. umm i tried filtering it, but now the filtered folder doesn't open either. i'm not a real computer geek, i dont speak your language, but i need help. pleaseeee
someone suggested trying it on another computer and my moms mac doesn't work on yahoomail. its so stupid help me