The Test of English as a Foreign Language is a standardized language test that people, whose native language isn't English, must clear in order to enroll into an English-speaking university abroad. Started in the year 1964, it is now accepted by over 9000 universities all over the world. Preparing for such a test requires proper study materials, guides and practice tests. Below are a set of links to various resources that provide exactly what you need to ace the exam.
https://www.ets.org/toefl/ibt/prepare
https://www.thoughtco.com/toefl-vocabulary-practice-quiz-4061539
https://www.testden.com/toefl/index.asp
https://www.graduateshotline.com/sampletoefl.html
https://www.kaptest.co.uk/toefl
https://www.examrace.com/TOEFL/TOEFL-Study-Material/
https://www.prepscholar.com/toefl/blog/toefl-vocabulary-list/
https://magoosh.com/toefl/toefl-ibt-ebook/
https://www.examrace.com/TOEFL/TOEFL-Study-Material/English/English-Antonyms.html
http://www.nonstopenglish.com/default-022.asp
https://www.examenglish.com/TOEFL/toefl_structure_1.htm
http://i-courses.org/toefl-ibt-preparation/test-taking-strategies
https://www.skypeenglishclasses.com/10-preparation-tips-for-toefl-reading-test/
https://www.fluentu.com/blog/toefl/how-to-prepare-for-toefl/
https://studyabroad.shiksha.com/exams/toefl/preparation-tips