Quick question please

I have one menu I do not want to have showing on my home page, how can I hide that? I believe I can do that in my css, from the homepage, but not sure what to put?

Please if anyone can give me directions, I would certainly appreciate it. The link says “store” it is in the Main Navigation location; I only want it posted within the site after they have logged in and not showing on the main page.

Thank You
Brenda