Trading the long side means that you have used a buy order as your opening trade or ‘gone long’. This means that you are anticipating a rise in price and will use a sell order to close your position.
Source:
https://www.dummies.com/how-to/content/long-trading-and-short-trading-cfds.html
The long side means buying the pullbacks in an up trend while
short side means selling in a downtrend. there are many indicators that will help you identify a good trend and give you a sell/buy alert.
Source:
https://answers.yahoo.com/question/index?qid=20100723022355AATumxr
