Does anyone know how to write a sonnet? i need to write a sonnet about romeo & juliet to show i understood the play.

Depends on the sonnet
Shakespearen is the easiest, the requirements are:
14 lines
iambic pentameter(10 beats per line)
abab cdcd efef gg rhyme scheme
gg is like a shift from the rest of the poem between lines 13 and 14
has to be about some type of love
petrarchan:
14 lines
two stanzas then the two lines
iambic pentameter
also has specific rhyme scheme
Abba Abba cdecde or cdcdcd shift after the first 8 lines
has to be about some type of love
there is also spencerian and modern but these are more common and the shakespeare one is the easier one honestly

What excerpts man? eh i think you forgot to add em in