How do you put an add and pics on here ?
Just post like you did for your ad, include some details and what not and a phone number or email.
For photos, try and get some smaller, low quality photos and you can upload directly to the site (You will see the button when you create a post). For more higher quality photos, you can upload to an external site (I like Imgur), and link them back here!
I for one really don't understand your question because you have posted 2 times here in the classifieds. Or are you asking what information is needed and what you can sell?
The photos need to be 250KB or under. I would not post your phone number on the ad but you can offer to send via PM to interested parties.
If you can't post photos a good description and what you are selling in the title of the ad. Also you need to state a price. It helps to know what the current market is other wise the ad will get passed by if too high or snapped up if too low. You also need to say if shipping is included in the price or not and if you will ship or if pickup only.
RE PM's (Personal message)
Click on someone or your own name and a new page will open. On that page click on send PM and proceed. Received PM's are sent to the email address you signed up with. Read the message in your email close, there are generally two way to reply, thru the board or direct to person asking the question.
Hope that helps?
Just buy an antique digital camera that is about the same vintage as the forum software and you will be good to go!