If you are starting in marketing today, whether you are a fresh graduate or you are changing career, the best way for you to employ your (free) time is creating content.
Show us that you have ideas and creativity (you do!), that you are methodical and consistent (you can be!), that you can try, fail, learn and repeat (that’s all marketing is about!).
There is nothing more deadly for the career of an aspiring marketer than thinking they have nothing to tell, nothing to share with the world, nothing to master.
The world is yours, go get it!