*Daily trading
*BTC mining
*Investing
*Selling your items in exchange for BTC; i.e(receiving BTC as payment for work or items sold)
*Yield farming (De-fi)
*Airdrops (this helps allot but be aware of fake ones too before participating)
*BTC surveys
I agree that the best way for newbies to make money from Bitcoin can be with investment, because the risk investment is lighter and quite easy
to do. Because like you said if a newbie tries trading and mining it's too difficult for a newbie to do it, because it takes experience and knowledge
to be able to make money from trading and mining. Actually, if there is an airdrop that gives Bitcoin it can be even easier for newbies, but now
there are no more airdrops that pay Bitcoin. If for people who have been in the crypto world for a long time, it's easier to make money from
Bitcoin. Because there are many ways that can be done, for myself, I now focus on working on the bounty campaign and trading.