Help needed with some basic Orange Squeeze things which are really annoying me

Just some really frustrating problems, but I expect the solution is obvious and I'm being stupid.

1. Is there a way to quickly get back to the customised "top menu"? I find myself endlessly pressing the back arrow, which is not good.

2. Sometimes I can go

New Music - tracklist <choose a track> -- play this song <i.e. load the whole album as a playlist and play from selected track>.

But sometimes I don't have the option to "play this song." What's going on?

3. Is there an online user manual for it?

Thanks