I'd say you should have a little practice on a board that you don't care about first, just get a protoboard and some resistors and have a go. Check youtube for

I'd say you should have a little practice on a board that you don't care about first, just get a protoboard and some resistors and have a go. Check youtube for basic soldering beginner videos, if only to see how long you should be heating the pads for. If you leave the soldering iron on the pads for more than, say, 7 seconds, you can lift the tracks off the board and that'll be a problem. I'm pretty sure the surface-mount parts are already done for you on the Infinity Ergodox, switches are just about the easiest things to solder because they're quite large and the pins are far apart. So yeah, shouldn't be too hard, and you'll have a sense of achievement when it's done! I love using a keyboard that I've assembled myself.