How'z garn?

"How'z garn?" means "How is it going?"

Gotcha

My co-worker said: "Gotcha!".

`Gotcha` means `I got you!`

Also, I applied for DMM Skype lesson. I selected daily plan, so I'll take a lesson once a day!
料金プラン - オンライン英会話ならDMM英会話

And, I found that it is very efficient for me to learn English by `iknow`, when I'm heading to the office.