water system leak at hotwater heater

[Skipster]

how do I access the fittings on tbe water heater. I can see a leak either the blue or red hose  going into the insulated water heater.  is there a utube  video on how to get to those fittings. I have trouble turning the valve off for water going into water heater and now there is water spraying out of the blue hose connection..  how do I get to it to repair. my hands won't fit anywhere in there.  do i take the styrofoam insulation off to get more room so I can repair the fitting.  no idea.    or should I take it to bish rv repair in bozeman,mt.. and let them repair it

Edited 1 hour ago by Skipster
to add more text

[Skipster]

so after consulting my chat ai.  i decided fixing it myself would be a big problem for me so i am taking it to bish rv repair in bozeman  montana  .  also having them make it easier for me to access the inline valve for bypassing the tank. I cant get my fingers on it to turn it on and off.   very tight.   also anther problem is the black tank shut off valve does not close all the way and the dump hose is always full    so hope they can repair these issues. so thanks and I appreciate the help and advice