Scott Aaronson's blog and his lectures notes at MIT. His book "Quantum Computing since Democritus" is quite great as well, no matter whether you are a researcher or just a layman.

If you want to delve deeper in the Quantum Physics side of things try "Quantum Computation and Quantum Information" by Nielsen and Chuang (PhD level textbook).

There are tutorials in the IBM Quantum Experience that go through the basics of manipulating qubits and putting opertions together into small quantum circuits.

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