2 - 4 horas
Needed to add a SSD on my Mac Mini to get faster access and work.
With the ifixit guide the installation was very clean, fast and easy, even for an absolute beginner like me. I had only some minor issues in re-installing the silver metal AC-in socket retainer. Apart of that the repair process went without problems.
None. The explanation is clear enough to complete the whole process without hassle.