Here are some videos explaining Plant Nutrition: Mineral Absorption, Transport of Water and Salts in Plants, Transportation Systems in Plants and Transpiration In Plants.
If you are interested in defoliation I highly recommend Bassman59's guide to indoor defoliation, the guide to defoliation may improve the amount of light getting to the inner branches and improve your harvest.
Increasing yield with defoliation indoors: What's it mean? How to do it?
The method...