I figured that crypto Exchange Service is demanded service so to start what need

[cryptoboss2020]

Let's Say fiat to btc
So how the process Works I need just Capital.
Then I register myself on kraken and people want to exchange they transfer money to me and I take little fee and give them coins.

As beginner what are the most things to know to start?

Couse I was Looking  5-10% per exchange not so bad.
If daily 1000$ and 10% you get 100$.

[Similificator]

Not a bad idea, honestly I was planning to do the same but the only thing is that I lack resources and the people who would trust me or are interested in this industry that is how few open minded people here are. as for you, the percentage you take is alright. next thing would ve to make sure that you are in a place where a lot of people are open minded or are crypto currency enthusiasts or are already in this industry. Next is to proce the legitimacy of your service. After that, I think you'll be set.