[Dubious]

Nitram, beginner's tips are probably the primary reason someone will (at least initially) download the guide. Bring them on.

I found posting an attachment a little confusing as well the first time.

For those who've never uploaded before, you select the "Post Reply" link at the top of the thread (or archive) page, which brings up a Reply page with fields for your Forum name and password. There is also a field for the "attachment", which is initially empty. Next to it is an "upload your files" link. When you select that, it brings up a separate browser window with fields for 3 attachments. There are browse buttons which let you navigate to each file location on your local drive. When you have selected the files and clicked the "upload now" button, the Reply page "attachment" field will have a single filename (random numbers with a ".txt" extension), which means the file(s) uploaded successfully. The ".txt" file is probably a "pointer" file to the real filename(s) and location on their server.

Or you can just put it up as a series of Messages. Looking forward to your contribution.