Decode and Conquer - Lewis Lin
The Product Manager Interview - Lewis Lin
Preparing for Product Interviews (with Flipkart APM deck examples) - Advaith Sridhar and Akash Ramdas
Swipe to Unlock - Aditya Agashe, Neel Mehta, and Parth Detroja
Case Interview Secrets - Victor Cheng (For basic structuring and flow of the case interview)
Cracking the PM Interview - Gayle Laakmann Mcdowell
Click on the links below to access the articles.
The ultimate guide to creating personas and how to use them to enhance your business
Flipkart - Product and Tech Blogs (Many tech companies have these kind of blogs)
Blogs from product leaders across companies and mock interview videos on YouTube can be useful as well.