תקשוב והוראה

I love that this gives simple pictorial walk throughs as well as practical uses. 

Really useful guide to online presentation tools+

Not so much a 'Quick Guide' as an in depth guide, really! Looks of detailed explanation and screenshots giving a solid overview of a whole host of tools. Much more useful than a list as you can read and look and get a clear idea of what the tool is and how it might be used.