Do not, I repeat, do not attempt a short without understanding all the risks.
When you buy a stock for $10, the most you can lose when that stock goes to zero is $10. In theory, when you short a stock at $10, your loss is infinite as the stock goes up higher and higher. In practice, your broker will most likely force you to cover that short long before that. Just know that the loss can be big and fast.
You should apply strategies you are most comfortable with and please do your research before attempting anything besides a long term buy and hold of index funds.