I made a video editorial discussing G. Vlad and Trouble at MIT from last Div 4 Round (CF Round 928). The video can act as a gentle introduction to Tree DP.
Youtube Link : https://youtu.be/xB2sZz7aa-M?si=z2eRU0dDai-jodmf
Here are 3 practice contests:
If you're a complete beginner, then you should only attempt these 3 problems : 1, 2 and 3