Welcome.
To post pics from your computer you need to click on the 3rd icon from the right side at the top of this text box, then click on "from computer".
You then navigate to wherever you have the pics stored on your computer, pic out one and upload it.
You can post up to 10 pics in one post. Make sure the file size isn't massive.
The other way is to host your pics at some remote site, copy the URL of that pic, then paste it in using the "from URL" instead of the "from computer" tab.
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