It is possibly important to ask “why” you are interested in learning about food processing.
If you have education in this area and looking to find a job in technology or management you should consider becoming industry ready. This would ask you to understand how value is created and delivered in this sector. You can carry out your own research or follow any on-line learning tracks such as this one: Certificate in Industry Readiness
If you are planning to build a meaningful business you would have to develop a competitive value creation and delivery eco-system. Market understanding, Technology choice and supply chain design will be the critical elements to work out. If you are looking for some supporr you can start here:
For either objectives talking to experts about your specific need would help. Here you can get support on-demand: