It's easy - just select the desired access level, copy this link and send it via email, instant message, etc.Link: Just a link to your wiki. Post this anywhere and people can ask you for the invite key.
The Big Six by Mike Eisenberg and Bob Berkowitz. Although not used widely in higher education, this is a good model for students to follow when working on a research project. http://www.big6.com/
Pathways to Knowledge. Follett's Information Skills Model, by Marjorie Pappas and Ann Tepe http://www.pathwaysmodel.com
Research Tutorials
TILT or Texas Information Literacy Tutorial. Geared towards helping students build better skills for online searching. http://tilt.lib.utsystem.edu/
A.N.T.S. or ANimated Tutorial Sharing Project.This is an initiative among libraries to pull together open source library tutorials in one spot. http://ants.wetpaint.com/
TRAILS-9 (Tool for Real-time Assessment of Information Literacy Skills). Freely available, standards-based online tool for high school librarians to use to assess the information literacy competencies of their students. http://www.trails-9.org