From your experience and the present landscape of the mining horizon, what will be your genuine advice for someone interested in mining bitcoin, to abandon the interest or to continue?
Also, if you think that they could still benefit well, what tips can you give from the lessons you have learned?
By tips I mean information like, best mining equipment name and model to use, and then other hacks you discovered on your own.
It is not by buying the best mining equipment and all. Have you thought about the other running cost? Do you have a facility to install your mining rig? What type of power do you intend to use - solar, fossil, wind? And have you calculated how much it would cost for each of these, the advantages and disadvantages running them based on your location? Have you considered some local laws and regulations with regards to bitcoin mining? How about human resource, what is your plan for it? Do you plan to run it alone or employ the services of someone else? These are the no-so-big but important questions you need to think about.
Considering costs, the facility where to mine, power, laws and taxes should come first. One could therefore consider test runs on a small setup and expand for there.