Welcome!
If you can find a model engineering club local to you, go and join.
In that way you can get advice, face to face.
Whereabouts are you located in Suffolk?
But as a complete newbie, it will be worth buying a book or two.
You will need some measuring equipment. A good start would be a Digital Calliper. This will measure in Imperial or Metric units , usually up to 6″ or 150mm, external and internal. A cheapie from LIDL or Aldi might be a good start, although a Moore and Wright from Machine DRO, although more costly, is a good one.
What lathe do you have?
Don’t be ashamed of a real vintage machine, such as a Drummond, or Myford ML4, they are capable of good work, even if not as “glossy” as something new.
If a Myford 7 series, such as a ML7, Super 7 etc, L H Sparey’s “The Amateur’s Lathe” will be useful, as will Ian Bradley’s “Myford 7 Series Manual”
If a mini lathe, David Clark, Dave Fenner and Neil Wyatt have all written books on them. (There are at least three mini lathes, made by different Chinese factories, and all slightly different imported into UK)
In more general terms Stan Bray’s “Basic Lathework” (Workshop Practice Series 45) or Harold Hall’s Lathework, A Complete Course” (WPS 34) will be good.
Start off with the basics, Learn how to set up a lathe, to grind tools and set them. Then start by just cutting some mild steel, to gain a little experience. Then progress to making simple tools.
You could copy some of the basic tools shown in catalogues (On line) from suppliers to the model engineer. In UK , such as Arc Euro Trade, Warco, RDG etc. They will be good sources of things like drills, Taps, Dies, and cutting tools. JB Cutting tools, is another good source of supply for tipped cutting tools.
One if the first to help you, would be a Centre Height Gauge, then perhaps a Sliding Die holder for the Tailstock, possibly followed by a Tap holder to go on the sane arbor (Basically, a drill chuck mounted of a body that slides along the arbor like the Die Holder)
Then while you are thinking about cutting threads, perhaps a Mandrel Handle. (useful to prevent braking taps, or stripping external threads by running into the bottom of a blind hole or against a shoulder.
Maybe not thrilling pieces, but useful for the future and to gain experience and confidence.
Better to make a mistake on a bit steel rather than an expensive casting from a kit!
All this may sound like additional expense, but will be a good investment for the future
HTH
Howard