I can't help you but I have had the exact same problem myself with Facebook and Google+, I've tried a variety of different formats but to no avail. In the end I've put it down to how these sites compress the images when they upload, and then gave up.
This is a tricky one, fonts they will not own but there is always a bit of a grey area as to who owns what in design. I have been asked many a time to reproduce artwork from scratch when the client has fallen out with the designer. There are a few tricks you can use if you wanted to be cruel...
Agree with the posters above, you don't need to shut down your computer, alot more damage can be done to your computer with components warming up and cooling down... I don't think they really use that much power either. The only time I've also had this very loud fan noise was on a firmware...
My vote would be for the A3 as well, A4 would be too small.. it's good to let your work breathe a little.
Also you may want to think about taking along examples of some printed work (providing they are not too big) and also photographing your work if it is a pack or multiple items that would...
If your looking are designing websites I would use Dreamweaver as a starting basis, anything more serious than that and you'll probably be writing the code yourself. As for the becoming an illustrator, look no further than Adobe Illustrator and getting yourself a Wacom tablet...
As dot design suggested, it seems a little odd that you would post on a graphic design forum questions about how to set up the look and feel for another graphic design forum? Anyways, try to keep it simple, not to many colours... less is more etc.
I've always taken it as:
Illustrator: Drawing/Illustrating/Sketching the robin and flower swirls
Graphic Designer: Putting the robin and flower swirls together into a nice composite (with text and graphics if needed)
*Raises hand* No safety gloves here.
Our health safety made us get a little yellow plastic bin to dispose of old scalpel blades and some wine corks (which I happily supplied) for storing the scalpels in when not in use.