Here is the IPCRG framework for developing IPCRG proposals for intervention pilot projects and action research, based on Langley GL, Nolan KM, Nolan TW, Norman CL, Provost LP. The Improvement Guide: A Practical Approach to Enhancing Organizational Performance (2nd edition). San Francisco: Jossey-Bass Publishers; 2009.
Greg Martin from the London School of Hygiene and Tropical Medicine offers a number of great video tutorials (November 2013)
Introduction to Research Methods
Cohort and Case Control Studies
Randomized Control Trials and Confounding
You can subscribe to his video channel to ensure you are posted with latest updates.
Basic statistics using respiratory examples
We recommend this book that includes in its authors Prof Aziz Sheikh, Joint Editor in Chief of npj Primary Care Respiratory Medicine (previously PCRJ)