Help:Contents
Editing
Editing can be simple or complex. See here for editing help
Contributing
In the early stages it may not be immediately obvious where to place your contributions. If you are logged in click your name (top line) then the "edit" TAB to enter your content. Then:
Probably the easiest solution is to make a link from Temporary Store to the page you create and then we can organise the actual route to it afterwards. Read and click "edit" (after Contribution List). type a space line and add your line.
Images
To upload images, go to upload file in the toolbox section (bottom left sidebar on this page).
Upload your file from that page, remembering the file name.
Link to that file later when you are editing the page on which you want to use the file.