Sorry for possibly duplicate post, I am interested in self-studying functional analysis. To give you a hint of my background; I've taken a class on real analysis (where we covered first half of Baby Rudin) and also a class on Fourier analysis (where we used Stein's Fourier analysis together with parts of his real analysis book for measure theory and to prove a.e. type of results).
Given this background, which book would you recommend me to attack? Thanks!