1. Can you use it for interviewing? so take it off the camera and talk right near it.
Yes, but you have to be careful not to fiddle with it in your hand. That kind of mic will pick up the sound of your hand rubbing the body of the mic, so if you handle it carefully you can get good audio as a handheld mic. Always have headphones around and always listen to the audio, and always adjust to the situatiuon.
2. You can put that on a boom stand right for voice acting?
Yes. It can be used on a boom. That kit comes with a shock mount, so all you would need is a boompole and a longer XLR cable:
http://www.bhphotovideo.com/c/product/392860-REG/Rode_BOOMPOLE_Boompole_for...
http://www.bhphotovideo.com/c/product/68099-REG/Audio_Technica_AT8314_25_3_...
3. What is the use of the Rycotte? Wind? and it doesnt say it can be used with the Rode.
Yes, the Rycote is needed for all shooting outdoors. You shouldn't step outside without one. The model I posted is 14cm and has a medium hole, which fits the Rode NT-G2 perfectly.