This report discussed about how to use online training and development program to improve retail industry’s (The Warehouse) customer service. The purpose of this report is to find out an effective method of using online training and development to improve The Warehouse’s customer service. The report uses secondary research to find out the skills, knowledge and experience that are important for retail employees to improve their customer service, importance of training and development for customer service, importance and benefits of online training and development, methods of creating an effective online training and development program, and technical factors of online training. Based on the literature review, the report finds that sales associate knowledge, communication skills, knowledge about the organisation, cash handling and some transferable skills are the important knowledge that should be involved in the online training program. Customer service is the blood of business and it has huge impact on businesses’ performance. By using online training, businesses can save cost and time, deliver to more staff in shorter time frame, allows employees to take the training in different locations, increase staff engagement and it would be easier to update material. To design an online training program, businesses need to take three main steps: identify training needs, design and delivery, and evaluate results. The report also discuss a lot of recommendations of designing a training program.