In much English poetry, lines are said to rhyme with each other; this really means that the last words of lines rhyme with each other. So a four line poem could have a rhyming pattern aaaa - which means that all four lines rhyme.

Read this stanza from a famous humorous poem by Lewis Carroll, You are old, Father William. What is it's rhyming pattern?

"In my youth,' said his father, 'I took to the law,

And argued each case with my wife; 

And the muscular strength, which it gave to my jaw

Has lasted the rest of my life."

Two words are said to rhyme when they end with either the same vowel sound, or with the same vowel + consonant sequence. This means that, for example, feet and meat rhyme because they both end with the same sequence. So does hoe and flow, both ends with vowel sound. However, food and blood do not rhyme because their vowel sounds are not the same.  

To know how to properly use rhymes in your poem, you must work on your ability to be able to recognise words that rhyme.

For example:

•  BISCUITS - musket, fruit, shoot, quiet

ANS = musket

•  SHARE - car, bear, bier, here

ANS = here

Hope you are getting the vibes. You can practice this using your rap skill. Lol, just kidding. Your dictionary should be able to assist you along the journey.