I'm leading a ten-person team for a 1-year long engineering project, and have no experience in project management. I'm thus looking for a project management software or online service, free if possible, that would allow me to make WBS, Gantt charts, resources management, and export this in a pleasant format. For now, I've tried ProjectLibre, but it's slow, and some functionalities are not totally intuitive. I've also tried PlanHammer, but it is a bit buggy. Asana appears to be perfect, but it's really too expensive. Do you know such a software, that could help me begin in project management ?