Newbie with new mac needs help

Go to System Preferences... in the Apple menu and select Energy Saver for anything related to display blackout and battery life.

Yes. If you're talking about the toolbar in each Finder window, you'll have to select the window. If you're talking about the Finder menu bar, you have to switch to Finder. You can do this with Cmd-Tab (or Cmd-Shift-Tab the other way) or clicking on the Finder icon in the dock.

Yes, the close box does not quit most applications. You need to press Cmd-q or use ApplicationName->Quit. (It's been that way since 1984 and it's not likely to change. You may be able to find a customiser to help.)

Enabling tabs in Safari happens by going to Preferences in the Safari application menu and selecting Tabs, then clicking Enable Tabs.

 

Finder

I think what you mean is that the left sidebar and the top toolbar are missing when you click on the finder in the dock? Therefore, you have to hit the oval button on the left to make the toolbars return? If this is what is happening then I think I can help you. Set the Finder window the way you want it to open to everytime (i.e. with the toolbars or without, size, view option...) now close the window by clicking the red x. Now when you click the finder it will spawn a new window the way it was when you closed it. It should open that way from now on. If you ever want to change how it opens you can do this again. You can do this for each folder on your computer, and the Macintosh HD icon on the Desktop if you use it. This allows you to customize each folder to open the way you want it to. However, I have noticed that sometimes it "forgets" what you set it at. Hope this helps. Also the "del" key is what you want to delete forwards. It may require you to use the fn key on your iBook to access the orange keys. I am not familiar with iBook keyboards but that is the key to look for.