Yes, you're right. Without sufficient of knowledge, don't try to trading. Because trade isn't a riddle. But I think day trader still can. You can see a chart and movement of market without more analysis
More traders especially the newbies without any experience fall into regrets, and easily having panics when the price started to dump. Doing some multiple choice on the coins to choose when trading isn't a good idea to have, because you maybe wrong if you have no such information about the currency you are picking. The chart doesn't give you enough reference, and good thing to do about is to research more often with that coins you are planning to buy. With this strategy you can develop skills and ideas on how you decide whether you wait for the price to increase or dump early, when you seen it no chances of gaining good price.