You said it was good. But in the first place it is not right. Because investing can be harmful.
*Daily trading=
For trading, you have to understand very well first. You cannot allocate a token for trading in the first place. You have to monitor that token well. What was the situation. Where do you think it is good for trading? Have to decide
*BTC mining=
You can do it if you want. But you have to do it with a lot of effort and time. It is allowed to do it in some places of the forum. You can earn from there if you want.
*Selling your items in exchange for BTC; i.e(receiving BTC as payment for work or items sold)=
If you want, you can easily buy and sell it on the exchange side.
re: USDT/BTC
ETH/BTC. etc
*Yield farming (De-fi)=
You can do this easily by following some rules. There are many tasks to do it in many boards. You can earn it by following their rules.
*Airdrops=
Airdop is used to identify the tokens of some tokens before they come on the market. It is introduced through social networks.
*BTC surveys=
You should know the following things before you serve
*Background
*Creation
*Growth
*Prices and value history
*Forks
*Regulatory issues
*Bitcoin faucets
*Theft and exchange shutdowns
*Taxation and regulation
etc