I am a novice and want to start with micro-single. Which is more practical, Samsung NX300 or Canon EOX M? Or recommend a few that are easier to get started.

You mean EOS m, Canon's optics are naturally better than Samsung's. In fact, Canon might as well buy a small Canon SLR, such as 1200d, 600d. It should be a small SLR. They have a viewfinder. It can make the camera more stable for novices and people with little strength. Sony micro-single is the best, Canon Nikon SLR is the best. I suggest Canon 600d, a better entry machine, and you can buy 700d if you have sufficient funds. It is also an entry-level machine, which is relatively easy to use. Then buy a (I'm not advertising) SLR photo book, and later (if you want to learn) buy a (more expensive) camera in Quan Huafu. Remember, the lens is more important than the fuselage.

I hope you can adopt it.