obtaining notes on classic textbooks

It would be of help beyond measure if I found commentaries, especially
full solutions for many exercises, to at least some classic textbook in
the basic subjects of analysis, topology, and algebra. Where do I get
this? Surely there is such a thing for at least one classic book in
each basic subject? It seems so at least for Jacobson's Algebra 1 but
have no access to this. I have several particular texts in hope, but
I'm ready of course for admissible alternatives.

Thanks,
Dani

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