Just built my first ortholinear keyboard!
Keyboard/case: Ortho60v2 from #cannonkeys (https://cannonkeys.com/products/ortho60)
Switches: #akko Rose Red (https://en.akkogear.com/product/akko-cs-rose-red-switch/)
Keycaps: Custom order from #kromekeycaps (https://www.kromekeycaps.com/)
https://www.rctech.net/forum/radio-electronics/336870-how-solder-correctly-not-so-brief-lesson.html
This is the guide I read when I first got into building fpv drones and it helped me a lot