Prerequisites for PentesterLab

Hello all, so I’ve read that a subscription to PentesterLab is worth it, so I decided to try it out for a month. I did the first 15 labs on the Unix and Essentials badges but I get the impression that it requires some previous knowledge, the courses assume that you have a solid foundation on using bash,burp suite and understand some networking concepts. So I decided to leave it aside for the time being to focus on the prerequisites,besides the ones I mentioned above,is there anything else I should learn about before continuing with PentsterLab?
Thank you in advance.

Have you completed PortSwigger’s Web Security Academy?

The written explanations and labs associated are quite useful.