Kernowek Qwyck ('Quick Cornish') is a no-frills taster course in Cornish that can be downloaded free of charge. It currently comprises 15 lessons, taking you with just a small vocabulary about halfway through the grammar for Common European Framework of Reference for Languages Level A1 (Breakthrough). Every exercise is reversible, so you can check your own work. A guideline pronunciation is given for each vocabulary item.
Kernowek Qwyck is fully compatible with the self-study book Desky Kernowek and with the Cornish classes run by lovinglivingcornish.
Click here for the pdf: