Galaxies' connection to the cosmic web allows us to use them as tracers of the matter distribution in the Universe and make precise measurements of large scale structure. The next galaxy surveys with eBOSS and DESI will expand the cosmic volumes probed with galaxies and provide unprecedented statistical power. The main challenges for realizing their full potential are methodological.
I will present how major methodological challenges can be solved with robust treatment of systematics, higher order statistics, innovative approaches to probabilistic inference, and improved understanding of the galax-halo connection. By overcoming these challenges and unlocking the full potential the next galaxy surveys, I will present how we can measure the growth of structure and total neutrino mass with unprecedented precision.