economics resources threadWatch
The best starter books for an A-level (or someone who hasn't done A-level maths) student would be:
Ian Jacques Mathematics for Economics and Business
Geoff Renshaw Maths for Economics
Jacques in particular is a fantastic book for self-teaching and you can work through this in your summer before 1st year at uni and be well prepared even if you weren't confident on the maths before as he really goes from beginners level.
For a stronger A-level student who is doing further maths I would recommend:
Alpha Chiang and Kevin Wainwright Fundamental Methods of Mathematical Economics
This is a classic book which in various versions has been a stable of economics courses for decades. It goes through the basics, but it presents in a more formal mathematical way than the two above and so can be a bit dense for an A-level student. This is quite comprehensive and includes a lot of topics that go right through an undergraduate course and also MSc.
Pemberton and Rau Mathematics for Economics
Similar to Chiang and Wainwright, fairly concise but comprehensive. This would be another good one for a confident A-level Further Maths student that is eager to get a bit ahead of themselves on the curriculum to get a good sense of what they will do at university.
Simon and Blume Mathematics for Economists
This is another classic and is a good reference for the maths on a lot of topics that are used in economics but can be a bit heavy going so is more useful for postgraduates, PhDs etc.
TSR's student-created revision resources for university level economics ^