Learning to grow own food

After I visited a vegetable farm, I start to ponder if we city dweller are becoming useless beside knowing how to use computers. Do we know how to grow our own food? The type of soil to give, the kind of environment to provide. 

Also I’m guessing many kids these days hardly know where their food come from. I would be guessing NTUC. I put too little thoughts on how we get out food and I think I need to change. 

There are too many processed food out there and animals are forced to grow at faster speed to feed the growing population. Current option for me is to learn more about food and eat healthy. Nothing Beats having good health.