Question: I keep seeing 

> 
> (not provided)
> 
> 
> 

under my 

> 
> Keywords
> 
> 
> 

section so I'm unable to see what people are searching for when Googling my website.

I had a friend say for me to click 'Search Engine Optimisaion > Queries' in Analytics and then link it to Google Webmaster Tools.

I did this a few days ago but I'm still getting the '(not provided)' problem.

Do I need to do something else?

Answer: 
Keyword (not provided) occurs for all Google searches now. It only affects the organic results, not the paid. It works by directing traffic through a redirect that strips off the keyword parameter, but keeps the other referrer information, so you at least still know it is coming from Google search.

You can't get rid of (not provided) appearing in analytics reports, and what your friend suggests is to instead link to [Google Webmaster Tools](https://www.google.com/webmasters/tools/home?pli=1), to see those reports (Which don't rely on Google Analytics), but comes straight from Google. You could login and see those reports in more detail if you just set them up and login there.

The Google Analytics hookup isn't that useful, as you can't link the keywords to other Google Analytics metrics or dimensions - its just a straight import there for convenience if nothing else.

What may be useful to get some kind information is to use the landing page dimension in the keyword reports. Select secondary dimension, then landing page and you will at least see where organic search has landed, and get some idea on what keywords they came from by looking at the title tag of that page.
As mentioned in some of the other answers, Google intentionally discontinued providing keywords when someone is referred from their search engine to a result page for privacy reasons.

There is no way around this within Google Analytics. There are some other methods for best guess using Webmaster Tools as also mentioned.

Another option is to use a tool that helps to match up keywords, landing pages and search volume. One such tool is provided by Authority Labs. There's probably some other providers too, this is just the one I know and use.

You can see exactly how Authority Labs works in this YouTube video
<https://www.youtube.com/watch?v=72mLFFTAMpw>