Google Calendar

I always have to have a calendar, but I find I am having to input my activities multiple times, b/c I have a wall calendar, and then a small pocket calendar in my purse, and then I will have an additional calendar at work. With my new phone, anything I enter into the calendar gets input into my google calendar and vice versa. If I had it entered into my google calendar online, it puts in on my phone. This allows me to access my calendar several different ways, but I only have to put the info once. One again, I love google and my new EVO phone!! Can't say enough great things about them both.