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First go to a photo uploading site. I use Tinypic.com
Upload your desired photos, and copy the message board link. It will have [img]www.tinypic...[img] you don't need the ' [img] ' parts you only need whats inbetween. You then paste that onto your post where you would like your photo to be.
Hope this helps

Hi Just did it for the first time myself...go checkout this post..short and sweet...How to upload images and videos on steemit @ cynetyc (5)...very easy!

Hey thanks guys. I will try

Tinypic.com - easy to use

I did it. It worked. Thanks guys

You can also just right click images from the web and copy the URL straight into your post. Minding copyright laws, of course! 😊

Good luck Steeming!

This one is really easy, but you have to click on the image after you upload it. http://imgsafe.org/