I was browsing several topics about bitcoin here and found the term "hodler". I know it is someone who prefers to hold coins, I presume to sell it for higher price later. And also I heard of "speculators"... btw how can someone speculate whole market, or at least a part of it like a cryptoexchange? In my mind being a speculator means you agree to set the particular price(lower or higher) with other speculators like you to manipulate market participants. Am I right?

And so I come to the topic of behaviour of people. Recalling a piece of book I read about economy, all people have demands driving their actions the certain way. So, what patterns of behaviour are there in btc market? More simply, what people buy and sell coins and in which cases? Who are all those hodlers, speculators, and how do they behave? I hope I asked clear question and we won't have misunderstanding about it.