someone told me DCA is best for high fluctuate investments
If i have 1000$ (Still dont have need to save from job)
what is best way to do DCA?
100$ in BTC every month or what is the best way?
DCA is very good but it is very important to know when to do DCA and when to ignore, also it is important to know that not all coins or tokens you can do DCA for, this is because where some will be legit to last long term others might not. A more understanding, first you must have a target else you will just keep buying and might run out of cash; now assuming you want to buy Bitcoin, you can buy it anytime the price corrects or anytime it dumps but with a specific amount, then you wait again to buy, but if it rather pumps you wait for price correction because Bitcoin always do such.
Also, in the case of some tokens, assuming you buy and it dumps, you can DCA by buying again such that when it pumps, you can be in good profit. Like I said, not all tokens are worth doing DCA for, because in some the dumping might be a way that the team want to exit scam.