Is the key now turning, or is it not? Do you have a voltmeter and are you comfortable using it? Can you get a schematic of the power distribution circuit to and through the ignition switch and the fuse block? Checking fuses means ensuring there is power to, and through the fuse, not just pulling it to see if it is blown.
Let me know what you are comfortable and capable of doing and if you can follow the instructions and perform the tests I should be able to lead you step by step to the solution.