Here is a sample of how it looks written...
It looks cryptic but it is really simple, every individual sound is a group of four symbols in a square such as in the above:
The bottom left symbol is a letter one of a,b,c,d,e,f,g and indicates where your tongue is in your mouth as the sound is formed. a is top of the mouth against the teeth, b is middle of the roof of the mouth, c is towards the back and roof of the mouth, d is forward near the teeth but halfway between the bottom and top of the mouth, e is back middle of the mouth, and f is bottom and forward against the teeth and g is bottom of the mouth back away from the teeth.
The top right symbol indicates the tone of voice as in music, a is the neutral note and b,c,d,e up to a gain are progressively higher tones of voice.
The bottom right symbol indicates how open the jaw is x for closed and is circled if the throat is closed as in "guh". , 1,2,3,4,5 for more and more open.
A word like "Ben" has a beginning, middle, and end sound hence three groups of four symbols make up the word. If the word is multiple syllables a comma is placed between syllables. Also the stressed syllable of the word has an apostrophe following it.
And that is all there is to it, with this way to describe mechanically the way the lips, tongue, jaw, and voice box are acting every dialect of every language can be written phonetically.