My absolute favorite plugin is the WordPress Editorial Calendar. I love it because you can literally write what you wan in th e post and then you can drag it where you want it to be. You can schedule your posts from there, you can edit from there and you can see it all right there in front o you. How I use it best is that when I have an idea for a post or when I get a sponsored post, I will just go right into my calendar and write it there. I use it almost like a planner. I might change my mind or things might have to be moved around, but it is easy to use. Think of it as a drag & drop calendar.
Here is how ours looked in May:
My other favorite plugin is the SEO one (amazing)
If you have never used it before, check out this post on how it works.
Those are my two favorites plugins and I recommend you get (or at least think about getting them.) They are helpful and I think they are GOLDEN!