I see Gainer & Looser every day in Coinmarketcap. I always try to know, which coin will Suddenly pump? I've read a few article, But I can not understand it easily. Many people say learn Fundamental analysis. If you have knowledge about this topic. Feel free, You can share your skills & knowledge with everyone.
That one is difficult. You have to be updated with the upcoming news, development, or events that could possibly boos the market demand of a coin. You need to be lucky to pick a good coin. I guess, it is just pure luck to invest in coins that will be pumped in a day.