For the sake of argument, I have some knowledge of bitcoin and blockchain but that I didn’t use them due of my unstable financial situation. I'm about to begin investing and even trading.
The bitcoin blockchain which is the first blockchain to ever exist are not used because of stable financial situation, they are for the purpose the have a public kedere that contain information about blocks and transactions which are validated or verified by nodes.
If you want to begin investing and trading, you should know they are different from blockchain. Without blockchain, there will not be anything called bitcoin transaction.
It is worth knowing that trading is very risky, but you can invest in bitcoin, especially in time like this when bitcoin seems to be undervalued.