When talking about earning without spending capital (money), frankly I say that to get free money on this forum by promoting a project or joining an Airdrop. I also say there is no guarantee after promoting a project can generate (money) for you. as I know that there are many types of fraudulent projects although not all projects end like that.
And My Friend has around $30k in capital and is planning to invest in crypto. I recommend BTC for the first choice and tell some of my current investments such as AXS, BNB and MATIC (I bought 3 altcoins when the price was low). other than that, AXS has reached its new ATH, while the last ATH for BNB and MATIC is around May.
My question is it safe to invest BTC at the current price?
Do you have any other Altcoin options?
The answer very much depends on how much the person needs the $30k.
Is it just play money for him? Or is it actually something that he needs in the very near future?
If the latter I would recommend against investing in crypto altogether. Only if he can afford to lose all of it should he even consider putting some away into crypto. In terms of your question of if BTC is a guaranteed profit making undertaking, the answer is a clear no. Markets fluctuate every single day.
I would not invest in any NFT related projects, including AXS right now. $30k is not a small amount so perhaps larger cap projects like Solana and Cardano would make sense.