What i wrote on another forum about the ease of Bottlehead DIY kits.
"The manual and support forum:
This is the most important thing with these Bottlehead kits and this is what makes them “easy†DIY kits for me. Their manuals are among the best manuals I’ve ever found with a DIY kit (at this moment working on 4 in total). It makes the kit accessible to be built by everyone. The PDF format manual is very thorough and I would recommend these kits to almost all ages (that can safely handle a soldering iron) and especially for those wanting to build their first DIY quality audio kit. The manual takes you trough the whole process step by step. Being 67 pages long, it contains everything you need from start to finish. Aside from the actual build it will guide a complete novice kit builder with everything you need to know about safety when building such a kit and clear soldering lessons for both point-to-point and PC-board wiring/soldering.
There’s also enough advice on the best way to complete the woodwork and how to get a good-looking finish on the chokes, transformer bell and top plate.
When you’ve completed your kit there’s another five pages on the most common mistakes and how to troubleshoot your kit. I’ve found these tips also come in very handy for troubleshooting non-Bottlehead gear.
The Bottlehead forum is the place to be when you’re not confident about a part of your build, when you get freaky voltages, or other troubleshooting errors with your build. Apart from that it’s also the place to be if you’re thinking of eXperimenting a bit with upgrades like I did (more on this later). On this forum every question, whatever it is, is taken seriously and answered so that you’ll be able to continue your kit building journey and enjoy your product the most. This support forum is the part that got me confident enough to buy Crack (now 5-6 years ago). Be sure to have a look on it! Older topics are full of tips and tricks that might spare you some headaches with your future kit."
And this is all you need (except for paint and wood glue):
https://ep1.pinkbike.org/p5pb16498406/p5pb16498406.jpg