If you are going to install the old user interface, you can skip this step and the configuration process will ask you if you want to automatically install these data.
We have created a couple of example data sets which have point observations stored in a mySQL database. The best way to see how to get LAS working with your own data is to install the example data sets before installing LAS. In the directory that gets created when you expand the tar file you'll find two files with SQL commands to install the data. Load these into your mySQL database using the following commands:
mysql -u mysql_user -h mysql_host -p < data/insitu/LAS_insitu_demo_1.sql
mysql -u mysql_user -h mysql_host -p < data/insitu/LAS_insitu_demo_2.sql
You'll have to supply a mySQL login and host which has enough priviliges to create a new database and new tables.