As a recent entrant into this fascinating hobby (I’m not into models but the engineering bit using lathes and mills) I was faced with where to start
I have bought many books and would recommend the following (some of which are also recommended by others above)
The Amateur’s Lathe by L H Sparey (an excellent overview)
Lathework a Complete Course by Harold Hall (Workshop Practice no.34 I think)
The Model Engineers Workshop Manual by Geo Thomas (more info than a Tibetan monk could digest in a lifetime on a mountain top, absolutely amazing book and thanks for the folks on here who recommended it)
My two penneth’ worth
John