Amy Scott has an excellent set of notes (mainly set out as a list of questions) which might help frame your thinking about the following ares of TOK:
1. Ways of knowing (perception, language, emotion and reason); clearly sets out the nature of each way of knowing and its links with knowledge.
2. Areas of knowledge; definitions of each area of knowledge are given, their methods of gaining knowledge are outlined in each and questions relating to knowledge claims.
3. Linking questions; a set of notes and questions to do with key TOK concepts: belief, certainty, evidence, explanation, interpretation, intuition, technology, truth and values.