For a new viewer/reader, the anime might be the best starting point. It gives a good overall look at the story, characters, and world. The animations and voices can draw you into the story easily. You can quickly get a sense of what the story is about.
It depends. Some manga reader apps are legal if they have the proper licenses and permissions to offer the content. But many are not, as they violate copyright laws.
You should avoid downloading manga from Manga Reader. It's not only illegal but also unethical. There are many legitimate options out there. For example, some publishers have their own digital stores, or there are subscription-based services that provide a wide range of manga titles in a legal and safe manner.
It's usually pretty straightforward. Just open the Manga Reader App, search for the manga you want, and look for the download option. Sometimes it might be in the menu or next to the manga title.
The main differences often lie in how the story is presented visually. In the manga, you have the original creator's vision, but in the adaptation, there could be changes in color schemes, panel layouts, and even the way characters express emotions. Sometimes, scenes might be omitted or added to make it more suitable for the adaptation format.