All the old leaflets issued by the Ministry of Agriculture are available to read on this very interesting site.
1945 may seem a long time ago and you may think some of the information very dated. But there is a lot of sensible basic information stored on these leaflets as well as a good guide as to what to do when.
If you learn to do the basics properly then experience will come with time. The leaflets also make you realise just how much you can do without a lot of cost whilst you are doing the basics right.
The emphasis on growing for all seasons including throughout the winter is one that sometimes gets forgotten now that it is so easy to go to the supermarket, vegetable shop or market. But if you are going to take on an allotment or vegetable plot then it makes sense to crop for all seasons.