Want to get into poetry

Or at least see if it's anything that can interest me. Can anyone here recommend some author or book that I could please? It would be good if it a book that's really easy to find since I'm going to buy new books at a smaller bookstore in my town (because I got a gift check, if I really need to I might buy the book from a site later).

You might try Homer's Iliad or Dante's Divina Commedia or perhaps even Milton's Paradise Lost

Cien Sonatos De Amor
by Pablo Neruda

Or you could try any book that has all of Shakespeare's sonnets.

Or you could read "The Prophet" by Kahlil Gibrahn.

Just check the books you use/used in school. Many teachers skip poetry in school as not many are interested in it, but the books usually contain a lot of info and examples that will give you a good start.

Otherwise, I suggest to simply go to your bookstore, browse the poetry-section and take whatever appeals to you.

Thing is, "poetry" is a big field.  Your best way in might be to look for general anthologies, in which you can sample a range of styles, writers, periods, subjects, etc.  For modern poetry, you probably need to look at printed books or their digital equivalents, and some of us still like the physical object, like my 150-year-old Longefellow, anyway (in which case used books can be a cheap way of finding things to sample).  For material that's out of copyright, you can use on-line sources:  there's a lot of pre- to early 20th century material on-line, including the texts at

http://www.bartleby.com/verse/

and there's often the Internet Archive (http://archive.org) for downloadables if you find someone you'd like more of.  There are also various sites and publications that print or discuss poems:  for one example, look at the Guardian (UK newspaper) Poem of the Week (now the Saturday Poem) at

http://www.guardian.co.uk/books/series/saturdaypoem

Buy the Norton Anthology of Poetry and start reading. $67 for 2256 pages of annotated poetry.

Here's a link to one of the samples from the volume
http://www.wwnorton.com/college/english/nap/Dulce_Et_Decorum_Est_Owen.htm

Anything by Sylvia Plath. "The Colossus" is a great compilation of her's.

Go and buy the Oxford Book of English Verse, or something similar. It will give you a good general overview of important poets from different eras, and from there you can delve deeper into what interests you.