Online learning gives us all the opportunity for continuing personal and professional development at times and in ways that suit us and our working and home lives. Anyone interesting in either certified or uncertified courses could do a lot worse than sign up for one of the courses or specialisation offered by Coursera, Futurelearn, EdX and others. There is a *huge* range of courses on offer for free. If you choose the certification route, you sign up and pay for that a week or two into the course. It's not expensive. Your work is, in the main, either computer marked or peer reviewed. I've done numerous courses, some certificated, some not, some with future work in mind, some just for fun. I do most sincerely recommend you take a look at them.