How to PROPERLY Use a Credit Card

I just got my first credit card. How do I use it properly. >> Oh, let me show you.When you go on your weekly shop or fill up with fuel, put it all on your credit card. But why can't I just use my debit card. >> Because this will boost your credit score, which will make it cheaper for you to buy a house or car in the future.>> But I heard credit cards ruined credit scores. >> Not if you keep the balance low. The trick is to use less than 30% of your available credit.>> But won't that just put me in debt. >> ...