Max Kerning is absolutely priceless!
Typographica – excellent typographic website
identifont
Absolutley brillliant for finding/sourcing fonts and if you have the money buying them – although there are some freebies too – watch out for the kerning though and if you are unsure check out max kerning again!
http://www.fonts.com/FindFonts/SearchBySight.htm?gclid=CIvQ_Mu96ZsCFd4B4wodqnUq6w
A priceless collection of signs from around the world.
