Hi Career changer into Digital Marketing & Analytics here. For digital marketing I'd recommend Google skillshop there are courses, practice spaces, mock exams and certification exams (Google ads, analytics, campaign manager, YouTube...) HubSpot Academy SeMRush All have free courses (some with certification), CXL have digital playbooks which can be really useful as well. There are quite a few decent free courses for digital marketing it really depends what you'd be interested in focusing on as to where you need to look, the above provide some really good core skills (as well as advanced and specialist skillsets if you want) and there's also things like stack adapt programmatic advertising (best to do some other advertising bits first for this one). LinkedIn Marketing solutions fundamentals and marketing strategy, Hootsuite have some free courses if social media is more of interest. For cyber security cybrary.it might be worth a look? And I'll second edx as well. For confidence, both in yourself and learning new skills as I'm not sure which you wanted advice for, don't be afraid to make mistakes, everyone does. Try and keep a journal or portfolio of your work, it will help refresh your memory and will track just how far you've come on the journey. Good luck OP! Answer from maz_11 on reddit.com