Multilevel Modelling, Center for Multilevel Modelling, University of Bristol, UK
There approximately 150 pages of materials covering fitting multilevel models for continuous and binary dependent variables in Stata using the xtmixed and xtmelogit commands.
Users have to register to access the pdfs, datasets and do-files, but all materials are made freely available.
Regression with Stata, UCLA Academic Technology Services, USA
The Statistical Consulting Group at Academic Technology Services has created a “web book” covering a variety of topics on performing regression analysis with Stata. The book does not teach regression but gives examples showing how to use Stata for performing regression analysis. Written for Stata 7.