Can someone help with advice regarding clearing cache?

I think that is what it is called. I would like to be know how I can clear my computer so that tracking where I have been on the net is not clear (no sinister purpose just work auditing) I have cleared out my cookies and recycle bin. I have also cleared history through tool options? anything else I need to be aware of?? just obvious stuff... I have been doing no naughties just here, mds, court sentencing etc.. thanks for any responses