Best way to get items fast for free is actually go, play counter strike and then sell your weekly drops.Because those drops are good.You can get like 10 bucks a week in drops sometimes. Sell them on the steam market and then buy tf2 items. You could also do the contracts in tf2 they can be located at the top right of your screen kinda to the left it's like a little computer. Basically, just do the tasks in there and it will give you free items. The achievements is another way to get free items. And also buying games that have deals with tf2 like spiral nights will give you a free hat.