Wikispaces has a "Wysiwyg Toolbar"

"What you see is what you get"

Text Tools: Just the basics...
Highlight text and then stylize text. (Bold, Underline, Color, Font size and style)
Numbered List, Bulleted List, Horizontal Rule
Link Button can link pages, websites
File Button is to upload and insert images and pdfs
Widgets and Tables are explored on the Advanced Wiki Page
Undo, Redo, Preview changes, Cancel changes, and SAVE your changes.

Here are some tutorials from YouTube

How to insert a file or image

How to upload an image

Link to Advanced Wiki Help