Help with iMac screen image size

[Picshooter]

I am a new mac user. I am trying to figure out how to enlarge the screen image so it fills the entire screen.I am aware that I can hold control and scroll with the mouse but that moves the toolbar out of view.I also have found a way(unintentionally) that it minimizes to the lower left side of the screen and when I enlarge it it stays on the left side of the screen. I end up dragging it back to center Any advice?
Thank you.

 

[spinnerlys]

The green knob on the top left side of a window maximizes a window, or use the bottom right corner to manually enlarge a window.

CTRL+scroll is a screen zoom, so you zoom into the screen, like a digital zoom with those digital cameras.


Also have a look at the following links, as the information presented there might be helpful in your future endeavours into Mac OS X and could clear up initial confusion and may even prevent harm to your system or your files.


Mac OS X Basics

Switch 101 - guide with articles made by Apple on how to accustom yourself, after you switched to Mac OS X from Windows​

Mac 101 - How to get started with Mac OS X​

Find out how - tutorial videos made by Apple on how to do certain thing in Mac OS X​

Pro tips - tips made available by Apple for easier ways of doing certain tasks​

Mac OS X Keyboard Shortcuts - Learn about common Mac OS X keyboard shortcuts.​

Mac OS X Beginner's Guide by MacRumors - learn about software, media players, shortcuts and some useful tips, tricks and hints​

Mac Guides - tutorials, product guides and more​

MRoogle - a very effective tool to search these fora using Google and made available by edesignuk, introductory threads: 1, 2 and 3​