Free online lessons, loads of worked examples, clear and practical explainations, and no-nonsense advice. Purplemath is here to help!
How to buy
3 buying options, with the steps, what each takes and the minimum spend.
Checking your access…
Ad spots
1 ad spot, with formats, rates and how each is bought.
Checking your access…
Channels
Each ad spot filed under where it runs — web, video, search, TV — so you know which one you are buying.
Web
Exchanges
The DSPs that reach this site, and who runs its ad sales.
Checking your access…
Categories
Similar to Purplemath
