Extreme newbie login loop and startup questions

[carmar]

@niceone

1. In some of the commands, what do I put in place of [code]?
   2.How do I boot into advanced recovery mode? I've tried ctl-alt-F3 but to no avail.

1. Can you give an example of the commands?
2. Hold Shift key or stab Esc key: [SOLVED] Black screen after install - #2 by Aravisian