Writing a Poem

WikiHow has an article explaining how to write three types of poems. The article is broken down into four parts: 

1. Sample Poems
2. Starting the Poem
3. Writing the Poem
4. Polishing the Poem

The article covers these types:

-Limerick,
-Tanka, 
-Cinquain.

The Limerick poem "has five lines that rhyme." 

The style is the ending word in the first line and second lines rhymes. The ending word in the third and fourth lines rhyme. The fifth line ending word rhymes with the first and second ending word.

A Tanka poem, which is new to me,  contains five lines. Unlike the Limerick poem, the Tanka poem does not rhyme. Tanka emphasizes syllables. 

Last, but not least, is the Cinquain poem. The Cinquain poem "have five lines that usually follow a specific structure."

http://www.wikihow.com/Write-a-Poem