According to the Australian Securities Exchange (ASX) there are over 650 metals and mining companies listed on our exchange, so how do you choose the best companies to buy. In the coming year, mining companies and the best commodities stocks have the potential to add an extra zero to your portfolio returns. Should you buy BHP, FMG and RIO? In this week’s show, Dale and Janine share five tips for buying mining stocks, plus their 10 favourite stocks from the top 40 mining and commodities stocks on the ASX.