I think my top tips (given to me) would be:
Other than that - ask lots of questions and never stop learning
- Make sure the supply of power is reliable and clean
- Make sure you have the cooling planned
- Make sure your network (LAN/Internet connection) is well maintained
- Find the right space: You may have a noise problem to contend with
Other than that - ask lots of questions and never stop learning
But firstly think hard do you really need it?!
Since profitability of mining is dropping from month to month, now it's a little bit over net cost, and it will drop more in th next months, when ETH goes POS and thousnds of miners with dozens thousends of GPU will searching for new coins to mine. If you do not have free electriciry, you should think twice to start mining right now.
Maybe it's better just to buy coins for example ETH, BTC or some new and very promissing and to hold it?!
Yes, it seems to me that mining is already losing its relevance, because it concentrates in the hands of several large companies.