Katakana, Part Three (sa, shi, su, se, so)

sa　サ
shi　シ
su　ス
se　セ
so　ソ

Katakana, Part Two (ka, ki, ku, ke, ko)

ka　カ
ki　キ
ku　ク
ke　ケ
ko　コ

Katakana, Part One (a, i, u, e, o)

Katakana sounds the same as Hiragana that you already know, but is used in borrowed words in the japanese language. For example, eugo(english) エウゴ。

Once again, the charts in the posts are taken from Namiko Abe from About.com.