You can go to some professional training institutions to study, or refer to some online learning videos for self-study. It is difficult to see a large-scale training institution, because few people are learning tile repair technology now, but some people want to better inherit the technology and make a profit, and also set up special training institutions.

Or try to be a maintenance apprentice of a tile company. Although the early salary is not high, I can mainly learn a lot of skills from the master. After a while, I can get used to it slowly. After graduation, you can also get employment in the original tile company, or go to other companies to achieve better development.

Buy some special books, most of which will describe in detail how to repair or what repair methods will be used for which tiles. Books teach theoretical knowledge, and what you really want to learn mainly depends on practice.

The advantage of specialized training institutions is that they can communicate more, help each other and study in a more relaxed and pleasant atmosphere, but only when they spend a certain amount of money can they have the opportunity to study. As an apprentice, you can learn skills while making money.