I 've read, many good a advices useful for everyone, thanks! Another good point is, what criteria do you use for stop-loss and profits?
The best way to trade do more research on coins before you trade. We cannot check price all the time. I personally use to check the altcoin price in blockfolio. Its has option to set alert for expected amount. Once price reach your expected level it may show the notification. That time you can sell it and make profit.