New 810. Reflashed to new OS. Mostly using it so far with Google apps.

While I feel pretty sure I am out of my depth, I am intrigued by what Debian can offer in terms of a more integrated experience.

so some basic questions:

1. How do I reboot? Just off and on again?
2. I bought a Transcend 4 GB micro SD disk with adapter. Doesn't fit...adapter is about 1/16th too wide. Wrong thing? If so, can some tell me exactly what to buy in the 4 to 8 GB range?
3. What folding or other small keyboard would work most effectively..does one use the usb hookup or are all bluetooth?

Many thanks as I tackle my learning curve.

Diesel