This material sets out recent thinking on career development to inform the future of Connexions and education for citizenship. It contains abstracts of significant publications; summaries of background thinking; references to sources of information and ideas; ways to link thinking to practice; and summary charts. Each of 10 sections is in 2 parts. The first part describes the thinking; the second part is a summary of key ideas in handout form. Section 1 discusses theory. The handout demonstrates the link between theory and practice and lists practice in five theory-related clusters. Section 2 introduces the theories and explains the clusters. Section 3 is on learning for today's world. The handout describes change at these three levels: worldwide causes, changing patterns of employment, and personal and social effects. Examples of the learning objectives the changes imply are set out. Section 4 and its handout sets out key terms for understanding career. Section 5 describes the career-learning theory and its four stages: sensing (Se), sifting (Si), focusing (F), and understanding (U), or SeSiFU. Section 6 discusses the theories in relation to each other, providing a framework for a general theory of careers work. Section 7 correlates SeSiFU with DOTS (Opportunity, Self, Decision, and Transition). Section 8 and 9 present a progression with an explanation of its significance to career learning and then the progression in terms of its learning process. Section 10 provides three sets of ideas concerning career, each answering a question about why it is worth investing energy in work. A conclusion highlights the theoretical pointers that best help enable useful learning for participation in working life and for active citizenship. (YLB)