Ad Plugin

Good evening everybody,

Ok so i just started my blog and adding some plugins but there are so many that i have no idea what to put, but if you look at my blog at https://jessicabyers.com/jbblog/
i have 6 ad spaces under the girl character, how do i put in a logo/small banner/text ad in thise 6 places? I assume i need a plugin but which one do i need?

I also would like to be able to put logos/banners further down under my navigation bar, and can i put in banners in my footer, like google adsense? what kind of plugin do i need for that?

Thanks