Need help setting up new aquarium?

I just bought a used 55 gallon set up, and I want to give a through cleaning before adding any fish to it. It is empty and I have so far rinsed of the gravel with hot water, put the decorations in a solution of 5% bleach and 95% water, rinsed several times and currently have them air drying. Now my big thing is the glass on the INSIDE of the aquarium is foggy, ive scrubbed with towels and used an algae magnet and it isnt dirty just has a foggy glaze over it. Can i use something to clean the inside of it? I know you cant use windex etc, but what about maybe vinegar ? Also I know a tank has to cycle before adding fish how long should it cycle for it? Thanks