You can either buy the latest copy or you can access this resource free online.
https://www.gov.uk/browse/driving/highway-code-road-safety
You can find updates for The Highway Code online.
https://www.gov.uk/guidance/the-highway-code/updates
You can read through any changes at your leisure.
The Highway Code is not just for learner drivers but it is an important resource for every road user. A new edition is expected to be published this year which will contain new amendments.
Information on the latest proposed changes can be found from various sources online. One interesting change is the introduction of a hierarchy of road users.
When was the last time you read the Highway Code?
www.alistairstuartdrivingschool.co.uk