If you want to test your LMS installation instantly you can fill it with some random data using 'genfake' module.
To generate data you should, once logged in, open in your Web browser URL http://ourserver.org/lms/?m=genfake and write how many user records should be created in the text box. After you hit enter, the whole content of database will be erased and populated with some random data. You might get some database errors while generating data, as this algorithm is not truly random.
For proper creation of dependences you should only run this module on empty database.
All data will be erased from database, except LMS users (Administrators) records.