A "strategy" for handling errors in golang and in other languages is to continuously propogate errors up the call stack until you are high enough in the call stack to handle that error. If you tried handling that error too early, then you will likely end up repeating code. If you handle it too late, then you will break something in your code. Golang makes this process super easy as it makes it super clear whether you are handling an error at a given location or propagating it up.
If you are going to be ignoring the error, a simple _ will reveal this fact very clearly. If you are handling it, then exactly which case of the error you are handling is clear as you will check for it in the if statement.
Like people said above, an error is actually just a normal value. This treats it as such.
