It is recommended for those needing a thorough treatment of algebraic topology (homotopy, homology) or set-theoretic topology beyond the basics.
: Download the highly structured, complete General Topology Notes hosted by the University of Edinburgh. an introduction to general topology paul e long pdf link
Because this is a classic text from 1971, it is widely available through digital libraries and academic archives: Review: not It is recommended for those needing
While specific chapter lists are limited in the search results, standard point-set topology texts of this era typically cover: an introduction to general topology paul e long pdf link
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The ISBNs for reference: