Now look at this board. Notice that there is a triple letter score right beside that top "O".
Now, because your vocabulary is so expansive, you know that "JO" is a word. (Don't worry about what it means, that's not important) You also know that "OR" is a word. That translates to 2 x 8 x 3 + 4 = 52 points!! For 2 letters! Other good words to know are "XI" and "XU".
Now, the other secret to kicking ass at Scrabble is that you should always put one full word on the board, and make another word with one of the letters.
This word is used quite frequently in Scrabble - ENZYMES. The "Y" turns "GOOD" into "GOODY" and it's also a 7 letter word. AND, as a bonus, it covers two double word scores!! This in total comes to 144 points. Not bad, not bad at all.
Now, applying the same strategy:
You make "JO" into "JOT" and with the triple word score, you get a hefty 19 (the "K" is on a double letter) x 3 + 10 = 67 points.
Anyways, I'll leave you to work on those 2 skills, and then I'll move onto some more advanced techniques like "Palming Tiles", "Any Tile is a Blank if You Turn it Upside-down" and "Taking So Long To Play That Your Opponent Quits". Good luck!