Update 2

Ok, I've been working day and night (and all day today) on this and have learnt how to create tables and chairs. After messing about with the basic forms of these objects I managed to take it a step further and apply the actual design to them which was actually a little more complex for me when I first started.

The more realistic looking office table than the first basic one I created

After this I moved on to using my basic chairs and added what looked like foam padding meshes to them in order to have them looking similar to the computer chairs that have wheels on. It was at this point that I noticed that all of the objects can be easily made to have round corners and by adding a few more shapes to a single mesh I can have it resemble whatever it is I was aiming for - even if it was vague it was a starting point for me none the less.

Following this line of thought I was able to create a monitor, mouse and keyboard set. From this point on I began duplicating the necessary obejects and placing them in their required locations, kind of sculpting out the main parts. Then I grouped all the similar objects that were in the same room. This will allow me to manipulate them all at the same tie if there was a need - rather than doing them each one by one.

My desk with a monitor, keyboard and mouse set

Next up I'll need to create a glass table and some basic chairs and the front of the office should be done. For the back (middle) room I'll need to be creating smaller tables and chairs with their own smaller computer desks.

That's all for now.