Lolli, the Bitcoin cash-back service, recently partnered up with Udemy, an online learning course system.
There are lots of Blockchain related courses, check them out!
With Lolli you'll get up to 18% as cash-back in Bitcoin :)
Privacy Alert
Those transactions are fully KYC trackable, so if you value your privacy, make sure to use a decent VPN, and collect the BTC in Wasabi for CoinJoining or use Monero as token-in-the-middle to break the trace.
Secure & Anonymous VPN - Uploadfilter? Censorship? No Thanks!