first you need to get knowledge of the past and present of any coin you wants to trade. Keep an eye on the market as well as other coins. Whales will do the rest of the things
What do you whales will do the rest of thing,? Can you explain more clearly? Thank you
because usually whomanipulating the price is the whale, you just need to buy a potential coin and let the whale make a pump (usually manipulate price of an altcoin with a big demand), but you should know that whales will not be able to do much in bitcoin trading because marketcap in bitcoin is huge and difficult to manipulate, you have to be really clever in choosing when the right time to buy and sell