Here are two sets of Tibetan Unicode flashcards for studying Tibetan language with "Anki":https://apps.ankiweb.net/. You can edit the sets or create your own flashcards with text, sound or images. The Anki desktop flashcard app for Windows is freeware.
"Tournadre - Manual of Standard Tibetan (Vocab)":https://ankiweb.net/shared/info/3465980039, Anki website, 105MB (accessed: 2021-10-02), based on Tournadre & Dorje 2003
"Tibetan 1000 words set":https://www.buddism.ru/___DICTIONARIES/TIBETAN_CARDS_STUDY_ANKI/, buddhism.ru, 54MB (accessed: 2021-10-02)
Further Links