That's why those so called support and resistance levels doesn't exist anymore because the market sentiments is very volatile and you just don't know if you will really everything in TA. Just like we witnessed 48 hours ago, the market is all green and everyone was very happy until without any signs, the market falls again and hovering just above $3400. So if you're really not that experience in crypto trading, might be better if you stay away for now because its going to be a very difficult to predict the price movement and of course chances of you making good profit will be slim.
That is right. For the time being, there are too few applications for BTC. So the price is mainly determined by speculation.