I am new to adwords - I have set up a new campaign, and followed all of the instructions, but the ad will still not activate - I have entered all credit card information, etc., still nothing. Help.
You need to give it time, up to half a day. This may seem like a simple question but are you sure you have Adgroups, keywords and adverts in place? And are those keywords meeting the first page estimate? Otherwise you won't be able to see them.
are you in the US? I know foreign accounts can have issues sometimes. PM me and I can possibly help you.
Wait until 24 hour, if still not active, please check keyword and content, it is must have relation. Find most popular keywords.