Tips for filing small claims against Evolve

Can anyone provide resources on where to start to file a small claims case? I'm in California btw and lost a few thousand dollars so I know I'm under the limit for filing small claims. I just have no idea where to start, or if Evolve is even who I should really go after. I'm pretty much hoping they just won't show up tbh, but just in case I want to be prepared and do this right. TIA for advice!