Below is an illustrated guide on how to Start a Thread and optionally add Attachments to the post.
Enter the forum of interest and at the very top you will see button that looks like this:
Then follow the numbers to make a post. Please remember to write a descriptive title, as that will be the key for other members to find your post.
Once the widow opens, using the browse button select the desired images. Please pay attention to maximum file sizes. If need to resize the images and then upload them.