Can anyone share me your thoughts which way is the best way to invest and where should i invest? In which currency and which exchange?
The best way to become a professional trader is to practice more reading. Reading is good but practice will bring you much deeper experiences, believe me.
I think you should invest in LTC, it's really a great altcoin at this time. coming it will increase to $ 200 soon because Halving. Binance Exchange will be the perfect choice for you.