It's funny but I wrote this today. I hope this is relevant

https://bitrpc.com/5-things-i-wish-i-knew-before-getting-into-mining-part-time/

Also, I partially agree with the sentiment earlier. You have to do a bit of research regarding this one and you'll want to see people who have done it already. Right now mining is tough, I would only start if I had partially existing equipment, but it all depends on how much you are willing to invest in. What is it for your case?