StatsSoft: Electronic Statistics Textbook
This site provides an illustration of the STATISTICA data analysis software and how it is used to create multiple regression models. It delves into both the conceptual side of multiple regression and also how it is performed.
Virginia Tech - Multiple Regression
This site is a good resource for students to consult for an introduction to multiple regression analysis, with an example scenario, and graphical representation of predictors.
This website provides a step by step process, inclusive of screenshots, on how to conduct regression analysis using Microsoft Excel.
UCLA: Institute for Digital Research and Education
This website provides various SAS data analysis examples of multivariate regression analysis, and walks students through the process of describing data, conducting the actual analysis, and what to consider in the process.