Elektrolyte

any tips to help me perfect my beat matching? cdj400's and 400 mixer

hey guys, I've been downloading a fair bit of shit from Beatport and i'm really happy with it. i get mainly electro house music from their site and i love some of the really rough electro they've got. i'm looking to add some commercial shit into my mix aswell though i'm finding it's just a bit too unheard of. just wanna get some good commercial remixes so there's a bit more familiarity in my set. any help much appreciated! cheers