If you want to try before you buy, then you can sign up to BMJ Learning for Free and complete a small selection of CPD, certificated courses.
You need to register here: https://new-learning.bmj.com/sign-up/register
Browse our Free content: https://new-learning.bmj.com/discover/free-courses
Complete a course and Upgrade to download your certificate and claim CPD
If you try to Start a course that requires a paid subscription, you'll be asked to Sign Up for a Monthly or Annual subscription, which you can do anytime by going here: https://new-learning.bmj.com/sign-up