product developer position is the really sensitive task to perform in real time industry. You are creating a product that needs to full fill the requirements of end user which is essential and useful for them.
Now in 60 days
> Your learn about the product strategy what is the essential need of end user
> Your product must be with engagement facility and user friendly
> Product security
> Product delivery
> Support

Would probably look at online learning websites like Udemy.com, download as many audiobooks as I could on the topic and start reading blogs from popular people in the industry.

Try http://mbsy.co/onemonth/18573440 I got like 4 certifications from there already.