1.Time will be enough, even if you face a tough question, you can mark it as flag and review later. 2. HIC blogs,reference manuals, tech briefs are enough, Qlikview 11 for developers book will be added advantage for certification. it has some good pointers. 3. You can try practice questions from the inter.viewcentral.com/events/cust/search_results.aspx?eventsPerPage=20&company_login_id=qlik&event_id=24&event_schedule_id=536&pid=1 4. Enough but go through qlik.com/us/services/training/certification/developer 5. I took 6 months.