I have been attending an awesome summer school at ICTS on Advances in Applied Probability at ICTS. Find the link here! There are many interesting things I have learnt here. Things that were related to my interests were the: optimal transport course by Dr Jose Blanchet, non-parametric matrix estimation by Dr Devarat Shah, and a talk on Gaussian mean estimation by Dr Praneeth Netrapalli. Find the videos for these talks on YouTube.