Sorry there are two questions here.

I notice on some quotes that instead of showing the whole quote it is possible to show only part of it how can do that I have nexus7 and android phone

Same for copy and paste say from a webpage where do you paste it to clipboard etc I don't seem to have any apps on my android devices so what do I need from Google store?

All advice welcome.

1.) Are you asking about quoting a post in a forum and then formulating a reply? Are you using a browser or the forum's Android App.? Generally there should be an option to quote or multi-quote, then reply, then you can edit the quoted post(s).

2.) I guess if the text is "copy-able" then just (very) long press in the area of the text, which should bring up beginning and ending editing bars, and a sub-menu for "Select all", "Copy", "find" etc.

1.) Are you asking about quoting a post in a forum and then formulating a reply? Are you using a browser or the forum's Android App.? Generally there should be an option to quote or multi-quote, then reply, then you can edit the quoted post(s).2.) I guess if the text is "copy-able" then just (very) long press in the area of the text, which should bring up beginning and ending editing bars, and a sub-menu for "Select all", "Copy", "find" etc.

OK I seem to gave figured it out when you are trying to do this on a touchscreen its not as easy using a mouse to highlight something,

Thanks