Oh Belgium! That sounds lovely!
A few questions:
What store here is most like Wal-Mart in the US? I am looking to buy things that are fairly cheap and will only last 3-5 years as that is how long we will be living here
Oh how I wish there was a Walmart/Target/Kohls here! There isn't really a one stop shop to go to like Walmart. You might try Asda or Tesco, or even Ikea for what you are looking for....
e have to get a driver's license within a year of arriving, how/where do I need to go to get the first "preliminary or temp license", I believe I have to take a computer test first then sign up for the actual driving test which can take a few months just to get the appt. And the next question would be does anyone have a name of a good driving instructor that will teach me "how to pass the test"?
You are able to drive on your US license for 1 year to the date you arrived in the UK, so you have a bit of time yet!
You will need to take what is called a Theory Test before the Practical (driving) Test and yes, you really do need to study for it!
I got a "Theory Test Study Kit" from WH Smith's, with dvd's to study from and I also downloaded a couple app's for my phone to help me through it.
You need to pass the written test and do the hazard perception, which is the video portion of the test.
It can be scheduled through
https://www.gov.uk/book-theory-test Can't help you with a driving instructor, as I was supposed to take my practical last week and as it turned out, my instructor had me practicing in the wrong test center area and brought me to the wrong test site. It was not a good day at all

When traveling to Europe what is the easier/cheaper way to get there? We took a train into Waterloo, a taxi to St. Pancras station (I wasn't up to figuring out how to take two different tubes yet!) and then Eurostar to Brussels this time but am wondering if I book something in the future if there is a cheaper way to travel. And do you travel out of London or Gatwick airport?
We flew to Germany last year using our air miles, but there are plenty of low cost airlines to Europe, have never taken the train over, but we have driven to Paris a couple of times.