The easiest way to do it I would say is on blogger.com. The account is free, just create a blog about anything at all, and publish it. The template helps you and has a automatic widget for inserting your adsense adverts. Easy as that.. Hope I helped.
There are not any adsense site. First of all must have a website or web page. If you want to pay register a domain and start your own site. If you want free you can create your own blogspot. In both the cases you must have a g-mail account. Then you can creat your adsense and put it on your site/blog/page. Be careful don't try to click it by your own.
I would go register a domain and create a wordpress site. Use the prosense theme (you should be able to search for it by name and find it easy), it is a great converting theme, set up specifically for adsense sites. Get lots of unique content and promote it!
I agree with starting out using blogger. Its very easy to start, easy to run, and easy to switch over to your own domain should the need arise... Just my 2 cents!
There are so many resources out there on the net... free of charge. Do some research into what Adsense is all about, find out about how to build a quality website and how to promote your site. After that you will be ready for the up and downs of been an Adsense publisher. You can't go wrong by checking out my site for a start...
Also, be sure to include a Privacy Policy page on your site. I've that Google really likes to see this.
Create a blogger account and then find content and generate traffic...so buy a domain...and try to upgrade the blog or website every single day by some post.
Yes blogger is great for a beginner, but make sure once you get the hang of it, or even now if you feel up to it, you get your own website with your own domain and hosting. When you own your own web property there are so many other ways you can monetize it when your ready.
Try with blog.. use blogger or wordpress (self host) with top level domain (com, net, biz, etc)... that doesn't need a lot of money...
it's easy dude..first sign up at blogger.com and start posting with your hobby, so you will not boring to that