I'd like to ask some questions that may appear a bit silly, no silly answers please, I can provide them myself!

Do tablet computers operate like my laptop or my smartphone, or a combination of the two? I don't mean the general use of them but in connecting to the internet.
If I use my laptop at home I connect to my own router. If I use it away from home, for instance in a hotel, I use Wifi or BTFon. (Last time I tried to connect to a hotel's Cloud Wifi my computer just wouldn't allow it so ended up using BTFon.) If I'm at home or away my smartphone accesses the internet anyway. (I don't use it for internet when I'm abroad).
If I wanted to use a tablet at home, presumably I'd connect to my router? What if I was away from home, would I use Wifi? And what if I was outdoors and wanted to use a an app, for instance a map with directions that uses GPS?
Does a tablet have a memory card slot? And a USB slot?
Sorry if this sounds stupid but I don't know the answers and if I look up things like this on the internet I sometimes have to trawl through masses of technical stuff to find the answer. I'm sure some Rootschatters will be able to explain in non geek terms.
