The best way to get your presentation running is to:
(a) click Slide Show | View Show.
(b) use one single keystroke on your keyboard.
(c) click the View Show icon.

Audiences love to have something to take away from a meeting. They also like to make notes during the presentations.  A nice set of handouts of your PowerPoint presentation would make you look good.  To make up a set of handouts you would:
(a) make a nice bulleted list in a Word document that explains each slide and make the document available for each participant.
(b) ask PowerPoint nicely to print out the handouts for you.
(c) supply a pad of lined paper and a pencil to each participant in case they want to make notes.

You have created a kiosk presentation of 6 slides.  You have inserted some background music on to the first slide but the music quits when the show moves to slide two.  You can play the music tracks on all slides by:
(a) inserting it onto every slide in the show.
(b) use the Custom Animation controls.
(c) play the sound in Media Player outside of your PowerPoint show.

You want your corporate logo or product image on every slide in your show.  You can do this easily by:
(a) visiting each slide and using Insert | Picture | From file in the PowerPoint menu.
(b) modifying something called the Slide Master.
(c) inserting the image onto the first slide in your show and then use copy and paste to put it on every slide.