I am sure that you should have complete information about each coin that is in your portfolio. It is not so difficult even for a beginner. A good project constantly publishes progress reports. We must not be lazy and analyze the work of the team of each of the projects.
You should carefully check your information before selling your cryptos. In most case, I see that people always making the common mistake that input the wrong address, lead to send cryptos to the hell. Please patient and step-by-step carefully when trading cryptos!