1) funny but I do not understand how to add menus and submenus, could you please explain to me and give the code and show the place where it should be inserted in header.
2)I want to change these figures myself on any company, it is very important otherwise the script has no interest and the site can never be realized and be alive.

3) what do you say to me I’ve done before, but on smartphones the site looks crooked, so I’m asking if there is any place where you can install for example the Google Adsense code and what is the recommended size?