Your journal is a very important resource for you during the Theatre course and it is essential that you keep it properly. This means recording the work you do week by week, and especially making note of theatre visits, workshops and rehearsals in addition to the work done in class.
In many ways it is much easier to keep an online journal, either through an online blog or website. The advantages are that you can write as much as you like, you can always access your journal, you can share your journal without handing it in, you can easily add pictures, video and links to useful websites, and most important of all you can't lose it.
You might want to keep a physical notebook to note ideas during lessons which you can then transfer to your blog or website, or you can update your journal from a smartphone or laptop.
The most important thing is to find what works for you and to stick to it.
You can create a free website at http://www.google.com/sites
You may like to look at the following examples of good IB Theatre blogs to see how other students have kept their journals:
Also check out Tilly's completed journal in the files below.