Best casino slots and slot tournament strategies?

Does anyone have any winning casino slots and/or slot tournament strategies? I know of several makers of slots, WMS, Bally, VGT, etc.. One thing is I’ve never played a slot tourney since I don’t know where they are, nor how they work (like how much it costs to be in the slot tourney, is there a buy-in $$ amt to have to pay to play, etc..) Any and all help appreciated!
Also, It seems to me like some of the end games (usually electronic slots w/video screens) pay out more and are ‘looser’, but anyway, any info on electronic and mechanical reel slots tips, tricks or info to win at all slots and any slot tourney info is what I’m looking for. Thanks!!