For Jdjjdd:
1- Log in.
2- Go the the category (Artillery, Bullets, Miscellaneous, etc) where your post will be on-topic.
3- Click on "New Post".
4- Type your post's Subject/Title, and whatever text you want to accompany the photo.
5- Click on Attachments and Other Options.
6- Click on Browse -- which opens a new window titled "Choose file to upload". That will allow to to go to a particular folder on your computer's hard-drive where the photo/imagefile is stored. Open that folder, then click on the photo/imagefile you want to post.
7- Click "Open"
8- Click "Post"
Important note: The filesize of the image (or total filesize of several images) you want to attach to a post is limited to 256kb. If your post exceeds that limit, the forum software will reject it.
Regards,
Pete