Nice KiCAD tutorial.<p>"Once you receive your PCBs, you can simply use some solder paste and a hot air rework station to put everything together!" Right. Soldering SMT parts is not easy and takes practice. You need to practice on junk or practice boards (there are $3 kits for this) to get the technique.<p>Here's somebody who's good at it doing it.[1]<p>I sometimes do this stuff, but the magnifier and tweezers thing is hard work.<p>The pros all use lead-free solder now, but most hobbyists are still using leaded solder, which is much more tolerant of temperature variations.<p>[1] <a href="https://www.youtube.com/watch?v=2Z7nCAxS2Rg" rel="nofollow">https://www.youtube.com/watch?v=2Z7nCAxS2Rg</a>