Below are a number of links to a Department of Veterans Affairs website where you can Assess your drinking or calculate your total alcohol consumption over a one-week period. The site has easy pictorial explanations of standard drinks.
If you are unsure of how much you drink, this Australian Government site has a simple picture of how much alcohol is contained in different types of drinks. In addition, there is an interactive drink measure, on the Department of Veterans Affairs website which can help you understand how much alcohol you are drinking.
Below is a picture about the risks of high levels of alcohol use from the World Health Organisation, Department of Mental Health and Substance Dependence, Manual for the Alcohol Use Disorders Test.