Ultimate Blog Marketing

How do you get payments on Google adsense, Also could a 14 year old sign up?

Dear friends, I have a plan of creating over 100 blogspot sites for my earnings. Can i use one google adsense account of as many sites as i want or i have to create adsense account for all sites?

I want to start using google adsense on my blog.
I want to know what is should do to get it working.
I also want to know about setting up an account to receive payment since I have no credit/debit card.
Should I make one?

I cannot figure out how to put google adsense on my wordpress I’m new to this but how do I do it please tell me.

I have a site with yahoo site solution. In order to add google adsense I need to copy and paste the html code to the site, problem is site solution doesn’t allow custom HTML. Do I have any options?