Tajweed rules are important for a Muslim to perfect his recitation of the Quran. Tajweed teaches students the characteristics and specialties of letters in the Arabic language and helps them to pronounce them correctly.
It means to beautify the recitation of the Quran. Tajweed has basic and advanced rules. All Muslims must know at least the basic rules.
Muslims often make a lot of mistakes in their recitation of the Quran that must be corrected. You can learn Quran Tajweed at an online Quran academy by taking online classes.