Could you please be more specific? It is very difficult to answer questions like this. You don’t understand “this” at all? Where do we start? Do you understand that you’re typing on a computer? Do you understand what the alphabet is? Do you understand what a variable is? I mean, what is “this”?
Looking at what you have so far, everything must be camelCase. So, capitalize the first word (except the first word) and smoosh them together. And the two uses of each variable (in the declarations and the assignments) must match.
If you need more assistance, please be very specific.