How to find out the shutter count on D5000 nikon?

Can you please explain it to me in simple words? Cuz I am a total noob, i am trying to learn, so I am starting from the basics. The simpler the better =]

thank youuuuuuuu
Added (1). Sorry what is an EXIF

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Will Raynox DCR 250 help me it all? If yes, how?

I have Nikon D5300. Lenses I have are Nikkor 18-55, Tamron 16-300 and Nikkor 105 micro f2.8.

I'm interested in macro. So should I buy this Raynox? Which lens (among the 3 I mentioned) should I use behind Raynox? Will autofocus work?

Read more: Will Raynox DCR 250 help me it all? If yes, how?