How to start building backlinks in your industry

Hello BWH,

I wanted to get some advice on where to start building backlinks for my website? What is the initial process? Is there a network or platform I can find people on? How do you typically reach out to people and will I be required to write articles for them to post etc?

I want to start building backlinks but I do not trust half the threads on here or the reviews and feel the best way to go about it is by doing the work myself.