Hi Caddie, welcome to mobileread
Not silly at all. It takes time to work out a new gadget - in my case a looong time as I'm pretty technically challenged!
I tend to only turn mine off with a full shutdown at the end of every evening (I use the power save function - just quickly slide top switch) throughout the day. My battery cycle is lasting about 10-14 days now depending how much I read.
You will learn loads of things on here, I know I have.