Keeping track of my business

I have been in contact with the SBDC in my area and have used their services every chance I can get.

Not knowing enough about quickbooks I need to ask...is there a version that is released every year that is only good for that year or can I use an older version of the software to manage my business.

Is there a recommended version that is maybe more simple to use than others ( assuming I do not have to go and buy the latest version and us it)