You can read more about Martial in this Wikipedia article. I've used here the edition of Martial online at the Latin Library. You can find an old Loeb edition, available for free, at GoogleBooks, containing the Latin plus a facing translation by Walter Charles Alan Ker, 1919-1920: Volume 1 and Volume 2.
Here is the Martial Distich of the Day; you can see a vocabulary list and notes by visiting the latest Martial posts at this blog. Meanwhile, you can also get a copy of the widget for your own website or blog if you want! Ready for more? Check out the Random Martial Distich too! :-)