There is an animated Dr. Strange movie on Netflix and I thought it was really well done. The animation makes a lot of sense to best display those supernatural elements. I would highly recommend watching that, as it looks like the MCU Dr. Strange is going to have a similar origin story.
I find it fascinating that the new trailer seems to deal a lot with "perception" rather than straight up magic - almost that these powers are still 'grounded' from a physics perspective. I think that will help ease the audience in that this isn't really "hocus pocus" rather than some cross of Theoretical Physics and highly-focused mysticism.
This interview might help you in knowing what to expect:
http://comicbook.com/marvel/2016/07...s-doctor-strange-starts-the-marvel-cinematic/
With that said, apparently there will be some other dimension type stuff for sure, which will finally introduce the multi-verse into the MCU.
As for the animated Dr. Strange movie, yeah, I've heard nothing but great things about it. With that said, I've already opted to not see it before the live-action movie, simply because I'm kind of looking forward to coming in clueless to the movie. Makes it more fun. However, after the movie, I'll likely check out that animated movie as I'm still interested.