I first ordered the "single" version. Despite the missing scheme and explanation, i kept thinking that this kit is doing what's is made for : SMD Practice.
So i bought a 5 pcs kit , to practice more the technique.
I started to made some research on smd, made a reverse of the circuit to understand how it works and "guess" what resistor should go where, etc.
I'm still on identifying components and "value things" but i later found that documentation https://images-na.ssl-images-amazon.com/images/I/81Cy21qq96L.pdf
Please note that i'm a beginner and schemes / explanation may contain some mistakes!