very good guide for starters. it is important to remember to treat concrete mixing like cooking and chemistry, because you'll need the right amount of water and safety gear if you want to come out with a quality mix. you can purchase the best mix in the world, but it's your handling that makes all the difference. for additional tips, you can find them at this <a href="http://www.readymix-concrete.com/ready-mix-concrete.php">concrete guide</a>. good luck!
How to Properly Mix Concrete
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