WYSIWYG ("What You See Is What You Get") is the most common content type, which can contain continous text, tables, links, images and so on. You can create text in bold or italic letters, add headlines, numbered or bullet lists etc. If you have worked with any office tool like Word, Open Office Writer etc. before, you will become familiar with WYSIWYG areas soon.
The default WYSIWYG editor of WBCE CMS is CKEditor. Many useful editor plugins are already shipped with the standard edition, even more are available in the developer edition of the CKEditor module (download it at WBCE CMS AOR).
For browsing media files, since WBCE 1.5.0 the elFinder is included, which offers the same full functionality as in the media management view.