Is it a big job to replace a turbo?

I'm curious about the intricacies of automotive maintenance, specifically when it comes to replacing a turbocharger. Could you elaborate on the complexity of such a task? Is it a straightforward procedure, or does it involve a significant amount of disassembly and technical know-how? Are there any specific tools or equipment required? Furthermore, how does the skill level of the mechanic impact the difficulty of the job? I'm interested in understanding the scope of work involved in replacing a turbocharger to ensure it's done correctly and efficiently.