So after 7 months of soul crushing searching I was able to land an awesome job I never thought I'd get! I didn't really get hired for my projects, I think I was more of a culture fit that knew enough of what they were talking about. My colleagues are awesome, helpful people but they are also clearly way ahead of me as devs. I know that many new hires have similar feelings and it's more a matter of drive + time. I understand that and I'm ready for the marathon ahead of me but I have one HUGE concern... I don't understand unit testing. I've never written unit tests in JavaScript or Java (just on paper I wrote random assert statements for a college exam question that somehow turned out correct). More importantly, I don't understand when to write unit tests and what my main objectives should be when writing them. At work they talk about unit testing like it's just as basic as understanding version control or design patterns, both of which I have had no problems asking questions about because I at least understood them generally. I come here looking for resources, mainly things I can go through over the weekend. I understand that I'm going to have to ask my colleagues for help at some point but I DON'T want to ask for help without any solid base knowledge on unit testing. I would feel much more comfortable if I could understand the concepts of unit testing generally, and then ask my team members for help on how to best apply that knowledge. I'm sorry for begging, I'll definitely be looking for resources on my own too. But if anyone could point me to resources they found to be helpful & comprehensive, or resources that they'd want their co-workers to use if they were in my position I would be very grateful!!!!