Before you start " mining " you need to do a lot of reading, learning on this forum , get some basic knowledge, and also make sure about how risky investment is to spend any money on a computer hardware / ASIC hardware just for mining prupose.
There is a great article about some basic information
And a great topic
about some very popular questions what really no one can answer 
Thank you for your help, very useful! There is a great article about some basic information
And a great topic
about some very popular questions what really no one can answer I DONT UNDERSTAND WHY NEWBIES KEEP ASKING THE SAME QUESTION " ITS TO LATE TO START MINING , IT IS STILL PROFITABLE ? WHY MY EARNING IS LESS THAN ALL THOSE ONLINE CALCULATORS TELLING ME? WHAT IS THE BEST COIN TO MINE ? WHAT IS THE MOST PROFITABLE COIN TO MINE"
No one can tell you !
Always going to be a 2 group of ppl who telling you it's ok go for it , or dont bc you just wasting ur money and time !
You have to make a decision for yourself !
Do your own research !
No one can tell you for sure what's going to happen with cryptocurrency !
No one can tell you it's going to be profitable for you or not !
No one can tell you how much profit you going to be able to make ! ( if you can make any at all )
No one can tell you the ROI ( return of investment) time !
No one can tell you what is the best coin to mine !
No one can tell you what is the most profitable coin to mine! Coins profitability always changing, what is best to mine today, maybe going to be the worst to mine tomorrow !
None of those calculators you are seeing on the web can tell you what's coming tomorrow , months later or 6 months later !
Those calculators telling you about today , at that moment when you typing in your information !
None of those online calculators calculating pool luck !
None of those online calculators calculating your stale/rejected or invalid shares !
None of those online calculators able to predict difficulty growth !
None of those online calculators can predict what would be the coin/$ exchanges rates a minutes later, a hour later, tomorrow, next week, months later, 6 months later or a year later !
It's little bit of gambling , you must to decide you want to play on the lottery or not
YES some of us got lucky , made some money with mining
YES some of us got unlucky , lost some money , bc when price started to fall , sold they coins , miners...
! INVEST ONLY WHAT YOU'RE WILLING AND ABLE TO LOSE !
! INVEST WITH THE UNDERSTANDING , THAT YOU COULD LOSE EVERYTHING !
No one can tell you !
Always going to be a 2 group of ppl who telling you it's ok go for it , or dont bc you just wasting ur money and time !
You have to make a decision for yourself !
Do your own research !
No one can tell you for sure what's going to happen with cryptocurrency !
No one can tell you it's going to be profitable for you or not !
No one can tell you how much profit you going to be able to make ! ( if you can make any at all )
No one can tell you the ROI ( return of investment) time !
No one can tell you what is the best coin to mine !
No one can tell you what is the most profitable coin to mine! Coins profitability always changing, what is best to mine today, maybe going to be the worst to mine tomorrow !
None of those calculators you are seeing on the web can tell you what's coming tomorrow , months later or 6 months later !
Those calculators telling you about today , at that moment when you typing in your information !
None of those online calculators calculating pool luck !
None of those online calculators calculating your stale/rejected or invalid shares !
None of those online calculators able to predict difficulty growth !
None of those online calculators can predict what would be the coin/$ exchanges rates a minutes later, a hour later, tomorrow, next week, months later, 6 months later or a year later !
It's little bit of gambling , you must to decide you want to play on the lottery or not
YES some of us got lucky , made some money with mining
YES some of us got unlucky , lost some money , bc when price started to fall , sold they coins , miners...
! INVEST ONLY WHAT YOU'RE WILLING AND ABLE TO LOSE !
! INVEST WITH THE UNDERSTANDING , THAT YOU COULD LOSE EVERYTHING !
(when other people can find it [tested it myself]). For starting, you got good advice above (knowing basic knowledge, then some of the technical things). 
