I got steam working the other day and tbh i was impressed alot better than i thought it was shame about it being down all the time...
In case you are wondering why you cannot log into Steam, it is because the Steam Network is down. Greg Coomer at VALVe has posted a news article about this:
The Steam network is down right now. We're working on a fix and should have everything working again shortly. Sorry for the inconvenience.
I will update this post when the Steam Network is back online.
if your steam still doesnt work when its up i would suggest u should go to search type steam delete all steam win files, ten reinstall steam but change the name of the folder "steam1" for example
(0d)