Just a word of caution on choosing your exchanges. It is not sufficient to avoid exchanges with low volume since many exchanges try to inflate their trading volume. Here are some good resources to find reliable exchanges:
1)
https://www.blockchaintransparency.org/Allows you to see which exchanges are guilty of wash trading.
2) Bitwise presentation to the SEC.
Link:
https://www.sec.gov/comments/sr-nysearca-2019-01/srnysearca201901-5164833-183434.pdfRefer to pg 60. There it is stated that "only Ten Exchanges Have Actual Volume". They are:
1. Binance
2. Bitfinex
3. Kraken
4. Bitstamp
5. Coinbase
6. BitFlyer
7. Gemini
8. itBit
9. Bittrex
10. Poloniex
And even then some in the list are problematic eg. Bitfinex.