Windows 8 phones - still need an instruction manual

As a smart phone addict I feel reasonably comfortable navigating my way around whichever device I happen to be using. With smart phones dependent on touch screen interaction the functionality needs to be intuitive. Granted there is often the odd extra function that you might not have realised until peering over the shoulder of a neighbour doing something new on their phone that opens up a new world of control. That said the bulk of usability should be as simple as using a pencil but it has to be said the windows 8 phone this week has me stumped. The home screen has lots of beautiful tiles and I love this different spin on Apples app iconography which I had assumed I could move around. Yep. Holding on one tile allows you to move it around or indeed remove it from this home screen but what if I wanted to add apps not already here?  How to introduce new tiles?  I tried dragging them from the app list. I tried using the settings to adjust the home screen settings but nothing worked. In the end I had to go online to find out how. It turns out I was close but didn't understand the language. In the apps list I needed to hold down on an app as I had been doing but when presented with a drop down list of options the correct next step was to select "pin to  start screen". Why this language?  What does pinning mean unless I am in Pinterest?  And why start screen, why not home screen which feels more familiar?  The functionality is clearly there but the language is confused which leaves people needing a manual.  I'm sorry but this needs to be more obvious. Epic fail in customer experience.