I did music and audio electrical systems at university then got a job as a video conference engineer in London as a trainee. Been in the AV industry ever since.
Check out Cedia. They explain all wiring and to what standards to do it. We use CAT6 network cable or CAT7 installed everywhere in houses. Covers all areas.
my iphone 5c has had the worst battery life since I got it. drains in half a day!!! awesome!! remember though, apple give 2 years warranty by EI consumer law. They dont tell you that!