Should I move on to the next module even if it hasn't fully sunk in yet?

Hi guys, I have absolutely no experience in web dev or any computer science type of stuff anyway i am doing a ruby track. First up was an intro into computers and the net and went all good then went onto html which i think i did ok in. Then there was an introduction to ruby and this is where i sort of came undone. I was able to pass all the quizes and got through the code challenges (with help from google). However im not totally confident it all sinked in. With HTML I was able to see what i was doing or at least see what my code impacted (if that makes sense) with the ruby one it felt more like theory with no connect practice. So should i just take the course again or move on to Java script basics and this will all start to make sense the more i get through courses?

Thanks