I Want To Integrate Google Calender in My Site

Hello Everyone,

 I Am Fresher To Development, And I Want To Implement Google Calender To My Site And Also Want To Add Events From Database, So If Anybody Give Me A Sample Code To Do That Means It Will A great help For me, I Searched in  Many Sites But I Found The Code But They Are Very Clumpsy So Can Anybody Help Me So That I Can Make it In  a Simple Way And Easy Way.

 Thank You Everyone In Advance...