[Reily]

Possibly the best algebra book every written!
Written for those who just want to do algebra, not written to try and turn K12 students into budding mathematicians.

https://www.amazon.com/Realm-Algebra-Isaac-Asimov/dp/0449243982

[TChad]

Possibly the best algebra book every written!

That book, Azimov's "Realm of Algebra," is barely available -- $57 for a USED copy. Those Amazon reviews are as positive as they could be.

Come on, Amazon, give us a low-cost Kindle edition!

[kosciusko51]

This one is pretty good for an overview of mathematics:

https://www.amazon.com/Mathematics-Nonmathematician-Morris-Kline/dp/0486248232/