Exchange cryptocurrencies on Coinbase without paying commissions

Coinbase is probably the most popular online exchange in the world, I also consider it one of the most reliable.
This is the link if you want to register: https://www.coinbase.com/join/5a1bec9af265530161169e35

Coinbase is the first exchange I've started selling and buying crypto, but commissions are not very cheap. But if you want to trade without spending commissions, there's a much smarter method. You can use Coinbase Pro. This is the link: https://pro.coinbase.com. If you already have an account on Coinbase you can also use it for the Coinbase Pro website.

You do not have to choose the "Market" option to view and buy without spending commissions but use the "Limit" option. In this case you will have to bet on the market trend, if you set a lower purchase price than the current one and the market drops you will buy without commissions. The same is true for sales.
Set a higher price than the current one and if the market goes up you will sell without any commission.
The important thing is that you can cancel your orders at any time without losing a single euro.