Ammonia Kit

[NatalieFish]

Hello! Nataliefish here, i've been told that ill be needing an ammonia kit and some water conditioner. my first question is what does an ammonia kit consist of? and also if i leave the water out in a container without its top of course for 24-48 hours do i need to use water conditioner? Thank you very much. I am still working at putting my fish tank back together after the massive cleaning. im trying to get the guts to put in the water heater ( i have a fear that ill electrocute the fish ). I want to make sure i know all the tricks, and anything else i may not know!

thank you very much. hopefully after all this advice i've been getting, i can help new people

thanks again!