We need a support at 350 to start talking about the BTC price putting a fight for a uptrend.
When you're talking about support, what do you mean? Loads of people buying at 350? Sort of like a checkpoint
Yeah it means there are tons of buy orders at 350 so its very difficult to go lower than 350. Usually there are supports in round numbers like 100, 150, 200, 250.. .etc. If panic ensues these supports can break quick tho.