Welcome to Chi, Les. I hope you have as much fun playing it as I do.
One thing that helped my game improve considerably was thinking in terms of anagrams. For example, if you play the word 'time', play the other words that you can make from those same four letters ('emit',' item' and 'mite') before looking for any other words.
After a while, you'll get to recognize some of Chi's little quirks. For example in the recent cardsharp game, nearly everyone played the word 'crap'. Far fewer - I'm guessing only the more experienced players - knew that 'craps' was one of the 'false plurals' that Chi allows. It takes a while to learn to recognize these words.
Each time you finish playing a game, make a note of the players who regularly finish just above you on the scoreboard. Make it your aim to get just above them next time.
Finally, don't believe everything you see on the scoreboard! It doesn't always show 'the truth, the whole truth and nothing but the truth'.
Good luck, have fun!
Mike K.