Recording your revelations and adventures in a journal is a tradition among pilgrims. I grew up on a steady diet of travel journals from Marco Polo to Jack Kerouac. See the reference section for some suggestions.
There is no right way to keep a journal. Each person has his own style. I scratch nearly illegible notes and diagrams in a beat-up spiral notebook I carry with me. I use the notebook to refresh my memory the next time I make an entry in my official journal, which I keep in a file on my laptop or on a memory stick.
Once a week I collect excerpts from my journal in a dispatch, which I email to my family and friends. Usually the dispatch contains a link to related photos that I have posted on the web.
Unfortunately, Biology 255 is a class, and as such, I am expected to evaluate your performance. Unless San Jose State or PGIS voices strong objections, I am requiring participants in the Sri Lanka program to post weekly dispatches chronicling their experiences. The dispatches can be personal, humorous, spiritual, scholarly, or some combination, but not fictional.
Toward this end I am asking students to create blogs at TravelBlog.org (http://www.travelblog.org/). It's free. Add my email address (jonpearce@myway.com) to your list of subscribers. Your subscribers are automatically notified each time you submit an entry, so put your family and friends on the list, too. You can also post photos at TravelBlog.