Jochen
Just a little hint on how you can post a photograph:
First you must have a link to a file that ends in .jpg (or one of the other permitted types) then you need to enclose it in the img tags.
This can be done manually or using the image button (4th from the left in the full reply or new posting screen. The img tags are those enclosed in square brackets in the code below (I used the "code" method because it displays the tags without acting on them) :
[img]http://tm-img.com/images/2017/08/04/caterham.jpg[/img]
The end result looks like this:

Note that Rich has used the image hosting service that we set up at
http://tm-img.com/ This service,
TM Image Library, is also free for you to use if you wish.
It is important, if you are using copy and paste, that the "http://" that is displayed in the pop up box when you click on the image button is removed before pasting the URL or it will be repeated which would be an error. Some hosting services, including
TM Image Library, also provide the possibility to copy the URL already surrounded by the img tags. In this case you only need to post that directly in your text without using the "image" button.
If you want to obtain the URL of a picture on the web you can often obtain it using a right mouse click on the on the image. In some browsers you may get a pop up menu that allows you to view the image and/or copy the URL of the image. Once you view the image you can copy the URL from the address bar. On mobile devices the same function can usually be performed with a long touch on the image.
For instance the TM header image is
http://www.talkmorgan.com/images/header-classic.gifWhich, even though it is a .gif file can still be displayed in the img tags with this result:
I hope this helps.