To post pictures, you have to go through an image hosting service. You have to do this, because you are still a kitten, and can not post attachments. I would recommend Photobucket because:
1) It's free
2) It's easy to navigate and use
3) It has it in an
format already
4) Many people here on TCS use it.
After you have signed up, and put your pictures on the web hosting service of your choice, you simply post the image format here. The image format will look a like this: (Don't click on it. It'll bring you nowhere.) Also, there should be no spaces between the and the web address.
If you have any more questions about this, feel free to ask! Many people are here to help, and I will help as much as possible!