The writer clearly has no - or very little - experience as a blacksmith. The style of instruction, for want of a better word, is simpy 'do this' or '... is then done using...' Had he actually done what he is writing about there would be more depth of instruction as well as tips of things to avoid doing. The historical parts are questionable too. Overall it seems that he has just gone to a few older reference books for his information, never a good idea for anything that claims to be useful for instruction.
If you want to understand how blacksmiths work, want to be instructed well and want the book to be clear, logical and progressive buy Peter Parkinson's 'The Artist Blacksmith.' Better still, get his DVDs. All are superb.
If you want a more historical perspective and to know exactly how everyday things were made by a smith, there are old books free online from the British Craft Council and similar organisations.