I got into the wood flooring business by accident. By that I mean I messed up a floor royally and when I asked for help I ended up working for and learning from the guy I asked for help.
I have been in the business for the last 30 years as an employee of flooring firms and as a self employed contractor. I now prefer to work as a teacher. My customers become my temporary apprentices and my temporary apprentices become lifetime friends.
I also do online consultation worldwide.
Sometimes I find that doing inlay work in wood flooring is a bit scary for some people. I did a job where I inlaid Goldfish made out of cherry into an ash wood floor. I'll run you thru the process that I followed.
The problem I often hear is that the floors creak and pop a lot. The problem often is that when pressure is applied to the boards, they flex between each other. This means that the tongue is actually moving slightly in the groove and generating the noise. That, plus the boards actually move slightly vertically and rub each other. Read about a trick that I have used to solve this problem.