Yes there is! Because you are a subscriber you can upload photos directly to your post.
When you are making a post, click on the + sign labelled 'Attachments and other options' underneath the posting box.
Then click on 'Browse', underneath the heading 'Attach:' and find the file on your computer.
You can then click on 'Insert attachment', and the picture (or the coding that will become the picture!) will appear where your cursor is in the post.
If you want to add further pictures you MUST click on '(more attachments)' first, or you will overwrite the first picture. Then go through the same process of clicking on 'Browse', finding the file, inserting the attachment etc.
PS
May I ask if there's a little tutorial somewhere on the forum that I can hunt out to find out all I need about posting pics?
There is now!