c) Easiest way is to plug in, tap your bank card, start the charge. Then to stop you tap your card again and disconnect.

...if only it was that simple Tim!
In my experience, so many charge points have legacy systems in place - think VHS vs Beta-Max, when both were trying to win market share! Older chargers used to try to funnel you down a 'download our app' route, prior to allowing you to charge. It was (is) a right faff - download, sign up for an account, register your card details, then start charging. All fine if it worked - which it almost never does - and all fine if you can get reception to download - which again you often couldn't. IMHO, BP Pulse was one of the worst (app down more than up!).
Thankfully, most of these seem to be being phased out and replaced with the format Tim mentioned - tap and charge. However, be prepared for some systems that are still using the old method. Frustrating and the sooner the points get replaced, the better.
Adding to Tim's other answers: fast chargers, require a two section connection - the standard round head, as well as the pill shaped connection beneath it (generally they have a cover on the lower section). Fast chargers are rarer, other than on motorways, Tesla sites. For instance, your local supermarket will probably have all slow chargers and, perhaps, one fast.
Tesla are the same connector - again, early EVs tried the propriety route and soon realised that was a silly decision.
One last point, you will get a cable - just a cable, no charge feature - this is worth keeping in the vehicle. Every once in awhile, you'll find a charger were you need to use your own cable and this is what that is for. Again, these seem to be being phased out but still exist and may need to be used in a jam (councils still use them too, with their bollard charge points!). You should also get a 'three pin (wall plug) charger - worth using in a jam as you can charge from any mains socket, albeit VERY slowly.