1) Nothing Special about Ourselves or Our Feelings - https://studybuddhism.com/en/tibetan-buddhism/mind-training/...
2) Addiction to Social Networks and Text Messaging - https://studybuddhism.com/en/tibetan-buddhism/mind-training/...
3) The Eight Worldly Concerns and Conceptual Framework - https://studybuddhism.com/en/tibetan-buddhism/mind-training/...
"Mind Training" is nothing otherworldly but merely exercises to modify/change one's attitudes and perspectives. The reason for such changes can be just to maintain equanimity when going through the everyday vicissitudes of life both good and bad.
A highly practical discipline and training which is especially needed today given all that is currently going on in the world.
Mind Training: The Great Collection translated by Thupten Jinpa - https://wisdomexperience.org/product/mind-training/ The comprehensive and definitive collection of lojong texts.
Essential Mind Training translated with introductions by Thupten Jinpa - https://wisdomexperience.org/product/essential-mind-training... A subset of the works from the above larger book. Read/buy this one first since it categorizes and introduces each topic before the actual texts themselves.
As for lojong, Geshe Sonam Richen's Eight Verses for Training the Mind is a great little book (I really like his translations).
B. Alan Wallace's A Passage from Solitude is an exposition on another core lojong text, Geshe Chekawa's Seven Points for Training the Mind.
They contain all the lojong texts and also the earliest commentaries on them by Tibetan masters.