Wow, I find it infinitely superior to video stores, besides almost every movie or series ever made being instantly available, and many reviews of them all!
Maybe I can help with that. Lists are good, google lists of..whatever you're looking for. e.g. best movies ever/comedies/european series etc. I use IMDb a lot, I read a page or two of user reviews of a movie and almost always know whether I will like the movie or not, and am almost never very surprised by what I think of it. There are a few critics I regularly read in External Reviews on IMDb, e.g. from Ebert, Urban Cinefile, Moria - but have learnt to mostly trust the user reviews instead. IMDb lists are a great way to discover new movies, either googling lists or seeing what lists the movies you love are in. (NB the movie score on IMDb is mostly no guide to anything.) When I find a director or actor or screenwriter I like, I check out their other stuff.
..If all else fails, you could (I hope) do worse than check out the movies & series I've given an 'outstanding' star to on http://www.adamponting.com/movies/ :-) Good luck.
I could semi memorize my local blockbuster and do a walking scan for stuff that was new or caught my eye. They also picked a genre for a movie. Netflix you can see same movie in drama/comedy and thriller. Just makes their catalog look bigger and harder to sort through.
I don’t use Netflix through a touch device. Only on TV via Apple TV or amazon fire so there may be some experience I’m missing out on.