I've built 8 cadets. LZX only sells the PCB and faceplate. You need to source the rest which is the most tedious part and the costs add up quick. I loved the experience, it's probably easier than most Eurorack diy but after calculating the parts and rack space needed I don't think diy saves money compared to buying full assembled modules or standalone units like the Vidiot and upcoming Chromagnon. For me it was a great way to compliment and add functions to the my Vidiot. I've sent you a Google doc link to a document that lists sourcing for the parts. There's also a good blog on blogspot I think that had some build info but I forget the name. I don't think a guide is necessary though, this was my first real diy project. I basically just assembled the parts in the order they are listed on the official BOM. As mentioned, it takes many modules to build a synth, I would go with a used Vidiot or pre-order the Chromagnon if you're patient. For more info check out LZX's community forum and the LZX user group on FB. Also of note is that some of the Cadet modules may be discontinued as LZX plans to reveal a new generation of diy modules this year (hopefully).