[I'm trying to change my Linden home as I'm a premium member and I'm not able to.]

I am trying to change my Linden home as I'm a premium member.  i'm following the instructions but I'm not able to find the commands its telling me.  

[I didn't get an item from a vendor. It's been since 3 January.]

I bought an item from a vendor on 3 January. I never received the item. The vendor doesn't respond to my messages. What recourse do I have?

[My person is stuck in the floor, how do I fix that? It happened when I was editing her]

See if you can teleport away from that site.  My partner got stuck in a wall. I teleported him out th

en he was fine. 

[Changing Premium Homes]

I have a premium membership and I do not like the house that I picked.  Can I exchange that home? 

[How long does it normally take to get the items you bought in the marketplace delivered to you?]

I'm new to SL and just feeling my way around so-to-speak.  I have a house and I just bought some furniture and stuff to decorate it.  How do I put it in my house and how long does it take to get moved to my objects folder?  I got one item so far.