If you want to be rich by investing in BlackCoin or any other promising coin read about this simple investing system:

https://bitcointalk.org/index.php?topic=345065.0

TL;DR:
1. Buy coins for as much money as you can afford to lose
2. Wait for the price to double
3. Reward yourself by selling 10% of your coins
4. Go to point 2

If at any stage something bad happens to the coin you should still have plenty of cash.
Don't sell all your coins - don't repeat mistakes of the people who were selling bitcoins for 1$ or worse.

Good luck