Attending an orienteering event is a great way to start orienteering. But you can still try orienteering at any time by having a go at a Permanent Orienteering Course (POC).
An Ecotrail which is a legacy educational resource is available at a number of POCs. Have a look at the Ecotrails page for details.
With smartphone technology, you won’t be looking for a post in the ground, but a buzz on your phone when you reach the centre of the circule. Have a look at the DIY Orienteering page using the MapRun app to find a Virtual Orienteering Courses (VOC) near you.