This dissertation deals with theories of organisation in young companies. The focus is on principles of organising in newly founded internet-based companies. The latter have considerably increased in the late 1990s in Germany due to the internet-hype. The thesis starts with an overview of the current entrepreneurship discussion and is followed by organisational theories with a focus on contingency theories and the works by Karl Weick. This is followed by a discussion of the emergence of organisational structures. As these theories show gaps in relation to organising in newly founded companies, the methodological chapter describes three research questions which have guided the empirical part. The latter is based on an explorative and qualitative research approach covering comparative case studies and a narrative analysis. The empirical part then describes in detail the (hi)stories of all four young companies emphasising their aspects of organising. The case studies result in four organising principles which are an attempt at operationalising the works of Karl Weick. These are (1) organising as enacting dualities, (2) organising as the context of entrepreneurial behaviour, (3) organising as identity construction and (4) organising as a game. In all four principles, the importance of organisational dilemmas is shown.