First of all, you have to understand in every investment there is always have a risk, so just invest from your secondary capital not your main capital.
If you okey with that you can keep going
... But with a small amount of money, how should I start and should invest in Bitcoin or another coin. Hope people show me a reasonable solution
Thanks very much.
The answer is bitcoin, because it more safer and stable than another alt coin. Because of that bitcoin is suitable for long term investment.
But if you want to try for short term investment you can choose alt coin, there are many good alt coin, you also can check the other 10 top coin at
https://coinmarketcap.com if you would invest to another alt coin.