The Silmarillion
http://www.ae-lib.org.ua/texts-c/tolkien__the_silmarillion__en.htmThe Hobbit
https://www.lake.k12.fl.us/cms/lib/FL01000799/Centricity/Domain/4432/The%20Hobbit%20byJ%20%20RR%20Tolkien%20EBOOK.pdfThe Lord of the Rings
1) http://ae-lib.org.ua/texts-c/tolkien__the_lord_of_the_rings_1__en.htm
2) http://ae-lib.org.ua/texts-c/tolkien__the_lord_of_the_rings_2__en.htm
3) http://ae-lib.org.ua/texts-c/tolkien__the_lord_of_the_rings_3__en.htmThe Children of Hurin
https://ia801006.us.archive.org/3/items/J.R.R.TolkienTheChildrenOfHurin/J.R.R.Tolkien%20-%20The%20Children%20of%20Hurin.pdfBeren and Lúthien
(best available version) https://www.dropbox.com/s/3sdi8p1p8b3ctvi/JRR%20%26%20Christopher%20Tolkien%20-%20Beren%20and%20Luthien%20%28v5.0%29.epub?dl=0
and (web version) https://www.redbrick.dcu.ie/~melmoth/p1.htmlUnfinished Tales
http://ae-lib.org.ua/texts-c/tolkien__unfinished_tales__en.htmHistory of Middle-earth
1-2. The Book of Lost Tales 1 and 2 http://tolkienjrrlosttales.blogspot.co.uk/
3. The Lays of Beleriand http://www.e-reading.club/bookreader.php/138990/Tolkien_03_The_Lays_of_Beleriand.pdf
4. The Shaping of Middle-earth https://vk.com/doc20746184_255404401?hash=ff4eee42a196ecb339&dl=7c37abba760696ff17
5. The Lost Road and Other Writings http://www.e-reading.club/bookreader.php/138991/Tolkien_05_The_Lost_Road_and_Other_Writings.pdf
6. The Return of the Shadow (The History of The Lord of the Rings I) http://www.e-reading.club/bookreader.php/138993/Tolkien_06_The_Return_of_the_Shadow.pdf
7. The Treason of Isengard (The History of The Lord of the Rings II) http://www.e-reading.club/bookreader.php/138995/Tolkien_07_The_Treason_of_Isengard.pdf
8. The War of the Ring (The History of The Lord of the Rings III) http://www.e-reading.club/bookreader.php/138997/Tolkien_08_The_War_of_the_Ring.pdf
9. Sauron Defeated (The History of The Lord of the Rings IV) http://www.e-reading.club/bookreader.php/138987/Tolkien_09_Sauron_Defeated.pdf
10. Morgoth’s Ring https://1drv.ms/b/s!Ao3sDPKlSLY5gxZPojP6tng2xNgC
11. The War of the Jewels http://www.e-reading.club/bookreader.php/138996/Tolkien_11_The_War_of_the_Jewels.pdf
12. The Peoples of Middle-earth http://vk.com/doc20746184_255404477?hash=ea2f3c0d696aa70b58&dl=285dc85f4f3a91b2eaThe Letters of J.R.R. Tolkien
https://timedotcom.files.wordpress.com/2014/12/the_letters_of_j.rrtolkien.pdf—————————————————-
Tolkien’s books irrelevant to Middle-earth:
Tales from the Perilous Realm
http://1.droppdf.com/files/ww8AQ/tales-from-the-perilous-realm-roverandom-j-r-r-tolkien.pdfThe Fall of King Arthur
https://www.readanybook.com/online/565599#357338The Legend of Sigurd and Gudrún
http://www.readsbird.com/legend-sigurd-and-gudrun-j-r-r-tolkienEssay on Fairy Stories
http://brainstorm-services.com/wcu-2004/fairystories-tolkien.pdf——————————————————
Links to learn Tolkien’s languages:
Sindarin
http://sindarinlessons.weebly.com/lessons.htmlQuenya
http://folk.uib.no/hnohf/qcourse.htm–Ardalambion
One of the most comprehensive sites about all Tolkien’s invented languages
https://folk.uib.no/hnohf/