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There are lots of books and resources to study in order to become a pilot. You could spend a couple hundred dollars on textbooks, the most relevant being:
Airplane Flying Handbook
FAR/AIM
Pilot's Handbook of Aeronautical Knowledge
Alternatively, you could take advantage of them as free resources compiled and provided by the FAA. I've taken the liberty of compiling links to the most relevant information required on your pilot journey.
Airplane Flying Handbook (406 pages)
Pilot's Handbook of Aeronautical Knowledge (524 pages)
https://www.faa.gov/regulations_policies/handbooks_manuals/aviation/phak/media/pilot_handbook.pdf
Aviation Weather (213 pages)
https://www.faa.gov/documentLibrary/media/Advisory_Circular/AC_00-6B.pdf
Below is everything compiled in the FAR/AIM, however I do not know how that book is organized.
Federal Aviation Regulations
Title 14
Parts 1, 43, 48, 61, 67, 68, 71, 73, 89, 91, 97, 103, 105, 107, 110, 117, 119, 135, 136, 137, 141, 142
https://www.ecfr.gov/current/title-14/chapter-I
Title 49
NTSB 830: https://www.ecfr.gov/current/title-49/subtitle-B/chapter-VIII/part-830?toc=1
TSA 1552: https://www.ecfr.gov/current/title-49/subtitle-B/chapter-XII/subchapter-C/part-1552?toc=1
Aeronautical Information Manual (405 pages)
https://wwwfaa.gov/air_traffic/publications/media/aim_chg_1_dtd_12-2-21.pdf
Pilot/Controller Glossary (118 pages)
https://www.faa.gov/air_traffic/publications/media/pcg_4-03-14.pdf
NASA Aviation Safety Reporting Form
https://asrs.arc.nasa.gov/docs/general.pdf
The Pilot’s Bill of Rights
https://www.faa.gov/pilots/rights/