What would be the best way to prepare for section two of the TSA?

The second section of the TSA can seem daunting due to its essay-based format. The important thing to remember is that this is a thinking skills assessment first and foremost. In my experience, having done the TSA twice and passing both times, the best way to prepare for the essay section is to practice and review your style of writing an essay. The important thing to get right in this case is the way in which you consider and argue the topic at hand, its important to be clear in your discussion and in presenting your arguments. Subject knowledge should not be something to worry about as the questions are open-ended and in general do not require any particular knowledge to answer effectively, though no doubt knowledge can be applied it should not take precedent in your preparation over the honing of your essay-writing skills.