I will always recommend PedalPCB for beginners. TONS of options, and all very well-designed by a very cool dude (not professionally affiliated but he and I chat every now and then).One thing I notice on the C2CE page is that it very clearly states that the builds are not for beginners. I am glad that is transparent! Is there a place though that [anyone] would point someone who is a beginner but is interested in learning the basics of pedal construction? Searching 'build bass effect pedal' on YouTube just brings up a feed full of videos about how to wire up a pedalboard of pre-built pedals as opposed to literally building a pedal
Another solid option is MadBean Pedals, I think he has some bass projects but I don't think he has as many. Also great designs though and also a very cool guy (also not affiliated but we also chat every now and then).
EDIT: another great source of info if you have questions is the PedalPCB forum. I'm a big fan of forums in general, and I spend almost as much time over there as I do here.