Easy to say buying dip by top coins but It's not to easy way. You have to extraordinary idea about crypto for buying dip and sold out high. Every top coins has there own power price so how i gonna to taken zero value? So maybe best idea to make trade sylow by top coins but for that you have to skills smart trader.
Try to understand the title, I think if you already understand the title of this topic, of course you won't be talking about trader skills here. Because the buyers on the dip are the brave ones who will better hold and store the coins they buy on the dip without rushing to sell them back. But if you are a trader who is not used to storing coins or rather Bitcoins, it seems you need another topic for a broader understanding and not just about buying at dips.