Don't worry. Programming and computer science is one of those things that anyone can learn on their own. If you don't mind some advice, though, try not to be embarrassed by things that you don't know. I can imagine that it is difficult, especially if you don't feel confident about your previous education. Even if most other people already know it, it just means that you have the pleasure of discovering it (as a certain XKCD comic pointed out).

One thing I've said to many people starting out (especially those without an academic background in the area) is that there is a lot to learn. Sometimes at the beginning, you improve so quickly that it is easy to think, "I must be getting close to knowing it all". After several decades in the industry, though, I'm still learning brand new (to me!) , important things every single day. In many ways, the best programmers are the ones who can see how much they don't know, not how much they do know.