welcome to mixvibes,
first thing to understand is that mixing is mainly a audiable sensory input, meaning you have to use your ears,
dont know your expericence level but using the sync and match features is only as good as the techonolgy that designed them, new to the digital scene myself, so can see/hear some of the differences between what i hear and what the techonolgy says the beats are ,and if the beat count is off then the matching will be off also.good example is Cross first bpm eng and the new one,60 out of a 1000 songs not able to anylise the bpm, new engine was able to anylise thoes tracks and establish a bpm, and also adjust all the others to a different bpm,
best thing is to use your ears,and use the match sync features to aid your ears not make your mix
not much of a tutorial, maybe just a tip