Curriculum planning/development

I look back on my experience as a pre-service teacher and I had a great time teaching and creating lesson plans with different learning models. I created working relationships with students that re-assures me on my career choice. however, in reading the chapters in the text and conversing with my colleagues I realize now that I lack knowledge in the curriculum planning and development stage. I do understand that there will be growth on the job but so many have talked of their working experience with mentor teachers and administrators I can't help but feel overwhelming behind the curve. This will prove not to be just any other class as I can see it will help point me in the right direction.