During in-world sessions a lot of information is delivered in a short space of time and it can be very easy to miss or forget bits and pieces. Not to worry! SL has it’s own note taker.
Open Preferences (Avatar > Preferences OR Ctrl P) and navigate to Privacy > Logs and Transcripts. The logs contain basic conversation information (name and date) and items are cleared after 30 days. The transcripts however are txt files of all the conversations you have inworld, including the main chat. Very handy if you want to review a session. The settings I use are shown below.
You can select where the logs and transcripts are saved in Preferences > Network & Files > Directories. You may need to reset this if you are using the lab computers; maybe saving off to a USB each session.