My #1 recommendation would be to read Seth Godin, he has a blog[1] and he writes daily. More often than not, each week he has a piece of advice that ends up being really valuable.
One day after reading his blog for several months, I asked myself -- if this is what he offers for free, I wonder how good his books must be! And that's how I started reading his books. I would recommend you Purple Cow, Ideavirus and Permission Marketing, but most of them are very good.
I've heard of Seth Godin a lot and read his short blog posts here and there. However, I've never read any of his books. Which of those 3 books is your favorite?
One day after reading his blog for several months, I asked myself -- if this is what he offers for free, I wonder how good his books must be! And that's how I started reading his books. I would recommend you Purple Cow, Ideavirus and Permission Marketing, but most of them are very good.
1: https://seths.blog/