I have some investments in bitcoin casino, i made 5-10% profit / month 
Nice! 5%-10% is a good percentage and profit for a monthly basis with bitcoin casino's. And that is what I wanted to suggest, you can try to invest with bitdice.me
But the most effective and best way to invest in bitcoin is by just simply buying it at lower price which is quite hard to make it happen again.
The new low price for bitcoin will be at $1,000.
Investing in bitcoin is best way of investing. before investing on something make sure you have best knowledge of the market, then save the btc which will give you best in return. best place to investing is nothing better than btc. just compare the investment value with any other way of investments, it is much better investing here in btc.
Yes and bitcoin itself is an best form of investment so if you are looking to invest your fiat in something then right place would be to invest in bitcoins and it will give you best returns in future in compare to other investment products.
Many people should understand bitcoin itself is an investment, even though you divert your fiat into other forms of investment. You won't make much money when compared to bitcoin investment. Bitcoin has bright future once more people are using it, the price of bitcoin will also increase automatically.
Yes that's the first thing that investors needs to do. But don't say that even though you will invest your money on other forms of investment won't make much.
Because it depends on your capacity to trade and focus on a certain investment, there are even people that doesn't know bitcoin.
But they are earning big amount of money but since we are in bitcoin this is the best opportunity so far for all of us.