Three newbe questions

I'm brand new to Mac and just got a MacBook Air that I actually had to send back because the space bar only worked if I pushed it in the middle. Slightly off center and it didn't move the cursor.
Anyway Apple is sending a replacement.

1. I wanted to ask if you could please tell me if there is a way to make the Close and Minimize buttons larger.
Coming from Windows these things are tiny on the Macintosh and it takes a lot of work to get to them.
I am speaking of every program not just one or two, even the Finder, it too has a very small close button. So this would be an OS hack I suppose but I don't think Macintosh has a registry to do those things.

2. Is it possible to save history in the Spotlight Search feature?
Each time I search and want to search again using the same keyword they are not saved and I have to re-enter the same words. I was hoping Spotlight would save something like the last 50-100 search words. Or better yet that I could decide how many keywords were saved.

3. In TextEdit, or any program where you need to save your work, when I exit the program without saving and get the Don't Save, Save, Cancel... dialog is it not possible to navigate between those options using the keyboard?
I find it awkward to go from the keyboard to the mouse all the time to do this. I'm a pretty heavy keyboard user.
In Windows one can use the Tab key to go from one option to the next in the same situation.

I hope you can help, as I said I'm completely new to the world of Macintosh.

Thanks

GD

 

Thank you for taking the time and answering my questions.

I appreciate it.

GD