Inside Wiki Links:
[[page name]]  - Edit the text within the double brackets to create a link to another page within the wiki

or if you wish it to be titled differently:

[[page name|link name]]

Outside of Wiki Links:
[url linkname]  - The url portion is the link you are leading the reader to. The link name portion is what you want the link to be named

Images:

[[Image:blah.png|*px]]  -blah is the image name and the .png can be replaced with the image type (.jpg/.gif). The *px part details how large it will be width wise

Thumbed Image:

[[Image:blah.png|*px|thumb|description]

Bold:
'''words'''

Italic:
''words''

Heading:
=words=  -creates page title size heading

==words==  -creates the second largest heading

===words===  -creates the third largest heading

====words====  -creates the fourth largest heading