Since computers were my business, just one quick note on solid state drives (SSDs).
Compared to traditional rotating mechanical disk drives they are better in most ways, but worse in a few other ways.
Better: MUCH faster read; lower power consumption; less heat generated (goes with low power consumption); much more rugged (more likely to survive a hard drop); weigh less; totally quiet.
Worse: Failure mode is not gradual: when it fails, you lose everything. By contrast rotating disk drives often fail gradually, and you almost always have the possibility of recovering some or all of the data, if you are willing to pay a data recovery service. Also worse: much more expensive for the same disk capacity, and really large capacities are still not available.
Solid state drives have fewer write cycles before failure than a rotating disk drive, but most of us will never reach that limit, so this one is more theoretical.
For a laptop or tablet, SSDs are the way to go.