In general, it’s very difficult to create a good WBS (Work Break Down Structure) and a project schedule because they depend on (and also affect) many factors such as project framework, project duration, project scope, project team size, professional skills required, staff over/under allocation, project cost, risk management, etc. 

Assuming you have been assigned to manage a one-year IT project, 

1. what information do you need to collect, what do you need to confirm, what people do you need to contact before you start preparing a WBS and a schedule for your project? Provide detailed explanations. 
2. how would you organise your work to make sure that all relevant factors are taken into account and your schedule is feasible and efficient? Provide detailed explanation.