You can start by finding a reliable source to access the manga, like authorized online platforms or physical copies from bookstores. Then, read it at a pace that suits you and pay attention to the details of the story and art.
It's hard to say for sure. The decision depends on various factors like the popularity and demand for it, as well as the plans of the creators and publishers.
The Dragon Ball Super manga has indeed finished. It wrapped up after covering a significant storyline and providing a satisfying conclusion to the fans.