First of all, think about the right questions – what do you want to measure? Just collecting lots of data is no problem, but does not make sense without further involvement. The question is: What you are going to do with the information you get from your different sources? Make sure you are clear what you want to find our. It is very important to combine your figures with qualitative insights, which you can obtain by talking to customers in general, key users of your product or other departments of your company, e.g. sales, customer care, support, development, etc. This is going to clear your view and make it easier to comprehend how things related. Check if the KPIs of your product are linked up with your jobs KPIs – are they aligned? Always keep track of your KPIs and your different environments, e.g. customers, competitors, partners, etc. More on http://www.slideshare.net/brainmates/10-tips-on-how-to-be-an-awesome-product-manager