How can I for instance install Mac office 2008 (CD's) which I use on my 24" iMac ? Do I need to by an external drive? Can I link the MBA to the internal drive of my iMac ?
The fact that you didn't just do the search to get the answer you need...likely means that yes, for you it would be way more difficult than just explaining "...in a few sentences".
I feel that there's nothing better than watching a video on YouTube of someone showing you exactly how to do it. You will get both the instruction and visuals to follow. I'm on my phone so I'm not going to go through the work.
The fact that you didn't just do the search to get the answer you need...likely means that yes, for you it would be way more difficult than just explaining "...in a few sentences".