What I mean by decent is where you can really see that it is growing and it can give you profit that is enough to be reinvested.
Call me dumb but I really don't know. I'm sorry.
My only source of coins is my signature campaign. I earn about less than 0.1 BTC per month.
Any advice would be much appreciated.
Bro It Depends Upon in Which Business You are Investing Your Money E.g. If You are Investing in Trading You Can Start With 0.3-0.5 Btc But If You are Investing in Some Other Business Then You Need a Big Investment.....
But I Suggest You to Invest in Trading After You Collect a Decent Amount But Be Careful In Trading Because You Can Lose Your Money if You Don't Do it With Full Knowledge......