I'm thinking of opening a few exchangers of cryptocurrency and other electronic currencies, but I do not know how, are there such people among you who have been in this business? Can I have a word or advice?
You mean creation of an exchange? Its more or less similar to creation of an website but needs to be regulated by the government and also need to ensure the security of the funds which people are going to deposit into your exchange so you also need to opt for wallet service provider with good security for all these to avoid hacks.