For anyone who has completed the algorithm scripting challenges (basic, intermediate, final projects), does it use alot of regular expressions in the solutions? I did the regular expresion module but I don’t think the info solidified in my mind. I think memorizing regexp syntax is pretty daunting.
RegEx are definitely challenging! From memory there is a good bit of RegEx work in the challenges - I remember my brain hurting at various points working with them 
But don’t worry, you don’t have to memorize them, there is plenty of great reference material online to allow quick lookups (e.g. the MDN RegEx guide) and it only gets easier with practice. Keep going! 
There might be some algorithm challenges that require regex but not a lot.
Sounds like you are saying that you need more experience with regular expressions. I say jump into those challenges head first and get some of that experience. If you need more, seek out another good tutorial.
There are some really helpful sites that help you visualize what your regular expression is matching. If you are willing to experiment some you can learn quite a lot there by doing.