Learning the two letter words is a must including their front and back hooks.
I generally wont play a blank or an S unless they get me 25 points better than my next highest play.
Dont underestimate the value of the X,Z,J and even Q they are the most important tiles other than the blanks and S’s.
Draw more tiles than your opponent.If you get more of the premium tiles (S, Blanks,X,Z,Q and J) you raise your chances of winning a LOT.I don’t mean by drawing 8 tiles either ;),make longer words if possible.
Rack balance,always be trying to get Bingos.Its easier to get a Bingo with 1 point tiles,or letters that work well together QU,ING,TION,ERS etc.I think this is probably the most important strategy.
Passing is silly,anyone that passes without trading is most likely looking for their opponent to open up a Bingo opp., they will not get it from me.Sometimes Bingos are unplayable,it happens. Make a play,try to keep the best rack and draw another bingo.
Lots of people I have played put a bunch of value(rightly so) on the TWS,but treat the TLS like a throw away square and open them up like they dont matter.just playing a 4 point tile on the TLS and making two words with it is at least 26 points (assuming no blanks are used).
Found a good play? Always look over the board and make sure you have found the best spot to play it.
Found a really neat word? Like AALII or JNANA? Neat words are fun and make ya look cool but it isn’t always the best play,you might be better off playing an uncool word.(though looking at the example I’ve given , if you have AALII in your rack,ya should probably play it cause your rack really aint that good.)
Being aware of the tiles left in the bag is important.I’ve seen players fish for a letter by trading when they are all in play already.
I could go on for awhile and really think I can improve most peoples game if ya wanna discuss it(just ask Twickster).