I would like to understand Grothendieck's Esquisse d'un Programme more. Are there any references that would help me, and are there modern works pursuing the same themes?
At this point I am still currently learning algebraic geometry, but I am familiar with the idea of moduli spaces as parametrizing families of curves (or more general objects) as well as the fundamental group from algebraic topology. I would like to know more as to what I should study next if I am interested in the ideas presented in the Esquisse d'un Programme.