This is kinda a mixed area. Honestly you need to have cheap electric to mine efficiently and alot of hardware. Bitcoin, dont waste your time unless you have around $2k for each mining setup you want. Only an S9 miner will do well on bitcoin now.
If you want to go another route you need a good graphics card and cooling setup. Will still cost alot and not cheap. But you can mine other currencies then convert. (My graphics card is over $1k alone for that).
Heres my opnion on mining farms. Its almost always a scam to rent a miner from them. Let me break it down how they make money,
You always pay a monthly fee. Lets say $300. (Just a number for the explanation). The miner cost $1800 setup. After the cost of the miner is paid off then the setup is profitable for them. However 6 months later you paid off the cost of the miner. And in month 7 on you are still paying the monthly fee including electricity regardless. And they still get your money whether or not it makes the coins or not to cover it. You cancel your account later and they end up with a free miner to mine for themselves and profit. Until someone else comes along and pays them monthly also. They also keep a % of the mined profits regardless.
I had a guy on linkedin contact me about his mining farm and he ran away after I questioned him on retention and prices how its shit for the renter and they are the only ones profiting.
If you really want to mine let me know and I’ll look at what a cheaper setup would cost then mine but around a $1500 budget. My setup is about $3300 but its branched off my main computer.
Sometimes you can use things like minergate when you have a set of work computers and mine with that easier. While it wont make alot it will make some. I installed it a few years ago and forgot about it on a few work computers. about 2 years after I happened to check it and had made several hundred dollars off it and didnt even use them too often. Since your mining coins and the value goes up in time it’ll increase what you are making.