I am interested in learning functional analysis through self study. My long-term goal is to use the concepts to grasp a better understanding of other topics e.g. optimization. My background includes linear algebra, calculus, and real analysis (I am still improving myself in the latter).
As I was looking for a book suitable for self-study, I found the following title: "Friendly Approach To Functional Analysis" by Sasane.
I have found these reviews MAA and Amazon, which have given me a good impression of the suitability of the book for my case. Also, according to the book's author, I have the pre-requisites to go through it.
Nonetheless, I would appreciate any feedback from the community fellows about the book with respect to its suitability for self-study as well as depth-breadth of the exposition.
Thanks in advance!