Which blog is easier to apply the google adsence

Depends. If you have slight cpanel knowledge then i'd go for wordpress ( freehostia is a great free host) because of all the great plugins with which you can for example make an autoblog... just relax and see the money reel in. :) If you don't have cpanel knowledge then i'd go for blogger. Get yourself a nice premium template, seo it and grab some money... autoblogs are hard to do though. One tip, don't go for the money earning niche... you're not gonna get much visitors...