Going through the tutorial. It's very well presented and easy to follow. I am quickly getting up to speed. By way of practice, may I ask you here a specific question; how does the browser back button feature in editing a Wiki? Should one avoid it as a short cut? Sometimes I notice that in the course of editing I am left high and dry with no links back to the page I am editing (for instance when uploading an image). I have probably done something wrong to result in that situation but when it happens, the back button comes to the rescue.
The back button in the browser functions in the normal way -- namely going back to the previous url address that you viewed in that window during the current session.
Using the browser's back button can cause issues when trying to remember that state of the local data and that which has been saved to the server. Remember that unless you click on the save button - edits are not yet saved to the server -- so it's a good idea to get into the habit of saving your edits before clicking on the back button.
Not sure if you were using the "show preview" button -- which does not save the changes to the server -- so watch out for this one as well. The preview button is intended to check whether you're happy with the layout before saving changes to the server.
Pretty soon you'll get the hang of how this works. I'm pretty impressed with your user page - you're showing early signs of becoming a wiki guru!