Square Root of Decimals:
Two websites I recommend are;
Khan Academy (basic and seems pointless but it actually can help)
https://www.cuemath.com/algebra/square-root-of-decimals/ or Cuemath.com
Those are the two websites I used when I was learning decimals and they helped me. Cuemath lists multiple ways to figure it out so I'd recommend that one first.
I hope this helped love <3
