Quantum Katas

check out Microsoft Quantum Katas:

Quantum Katas has API and examples related to Basic quantum computing gates,
Superposition,Measurements,Joint measurements,Simple algorithms, Teleportation
Superdense coding,Deutsch–Jozsa algorithm, Bernstein–Vazirani and Simon’s algorithms

Learn at your Own pace

https://cloudblogs.microsoft.com/quantum/2018/07/23/learn-at-your-own-pace-with-microsoft-quantum-katas/

github repository:

https://github.com/Microsoft/QuantumKatas