Its really very eassy to get approved for google adsenve account. Actually. You have to only follow only few steps.
1. Post more than 50.
2. Increase traffice to +50 a day.
3.wait for 2 months. Coz new accounts are not approved.
4. You should be 18 atleast to apply for ad.
One of the best profit of adsence is that .you dont need any html coding in your templament