Furthermore "Watashi" only applies to female speakers. The masculine version of "Watashi" is "Boku". So if you're a man you say "Boku wa derp desu."

Furthermore Watashi and Boku are used in formal talk, when talking with friends or close people the conversation shifts into the free-form and "Watashi" ---> "Atashi" and "Boku" ----> "Ore".

Enjoy your free lesson in japanese.

Small clarification is necessary here: 'watashi' isn't exclusively feminine, yet it is usually perceived as being so.

I didn't know about atashi and ore, so thanks for that!

Watashi wa just means "I", the "wa" implies that "watashi" is the subject of the sentence.

So, "watashi wa ganondoruku desu" would mean "I am ganondork" (desu means 'is').

Yes, you're right, I'm not a native English speaker so I obviously make mistakes. Thanks for the clarification!

No problem, I don't even speak Japanese, at least not well, it just happens that I remember that from when I took Japanese in college XD