I am very new to Ethereum dev and I am currently following a tutorial. However, the Remix IDE seems a bit different from the one on my computer, likely because Mist has updated since the tutorial has been uploaded.
Basically, I don't know how to compile and run my code.
I tried the create button under "run" on the right navigation bar. This is the error message I am getting:
creation of MyFirstContract errored: Send transaction failed: invalid address . if you use an injected provider, please check it is properly unlocked.
I don't know if this is useful but my mist is set to the Rinkeby test network.
It would be really appreciated if someone could teach me how I can run my code. :)