Starting the graphical mode with the basic viewer activated is as simple as :
$ lttv-gui
Using the text mode is very simple too. Look in /usr/local/lib/lttv/plugins for the list of modules. You may use the --help switch to get basic help on the command line parameters of every loaded modules. To simply output the events of a trace in a text file, try the textDump module. The batchAnalysis module permits to do batch mode analysis (state and statistics calculation ) on a trace.
$ lttv -L /usr/local/lib/lttv/plugins -m textDump --help