Rack management consists of two actions: 1) ordering tiles by prefix or suffix, 2) deciding what letters to keep or get rid of.
Players who are new to the game will often place tiles randomly in their rack. Doing this adds an extra level of difficulty for finding new words on the board. Ordering letters into the most common
prefixes or
suffixes (which ever makes more sense given your letters) makes it easier to create new words. Alphabetizing all tiles in a rack is an advanced technique. Players who study alphagrams(words in alphabetic order) will find anagramming easier.
Decisions about what tiles to keep, play or exchange need to be strategic. Playing the first word that comes to mind is a good way to lose the game. Creating
bingo words needs preparation and saving of tiles. Having too many vowels or consonants can also become a hindrance. Playing duplicate letters is generally a good idea. A rack should always be well balanced ideally with most commonly used letters like A, E, I, T, N, R and S.