7 mac os x shortcuts combo that save your time

Replacing a few clicks with a keyboard shortcuts seems to be trivial, but the time they save adds up. If you are a computer professional, using shortcuts means you are running at a faster cycle. Here are 7 mac os x shortcuts combos that save tons of time.

1. Browsing shortcuts combo. When you are browsing websites using a browser, you press command + N to open a new window, then you regret, so you press command + W to close it. You press command + T to open a new search tab instead. You suddenly want to look up something in your local file system. You press command + O to open your Finder. You click a file, press command + I to get detailed information about the file, including the url the file is downloaded from. You are happy about the information, so you command + W to close the information window. Then, you press command + T to open a new finder tab. Here you want to open an document, so you type command + shift + O to switch to Document folder, then you click open a pdf file. Now you want to compare something in the pdf with a webpage, so you press command + tab to switch back and forth between your browser and the pdf viewer.
2. Configuration shortcuts combo. You suddenly feels boring and want to change every mac os x default settings. Good idea, lets start with the browser window. You press command + "," to open the browser configuration no matter it is chrome, safari or firefox. You click advanced, take a look at your certificates -- suddenly wants to check if your firewall is on. So you press command + O followed by command + shift + U to open the utility folder in Finder. Then you click open the System information application, then verified that the firewall was on. So you regain your happiness and decided to turn the display brighter. The brightness adjusting key is at the top of the keyboard, you can just press it. However, you are very picky, you want more control from the system preference. So you press option + F2 to open the build in display panel in system preference and changed a few thing. How about sound? No problem, press option + F11 opened the Sound panel. You feels the power, so you want to go deeper. You press command + space to open spotlight and type "console" then hit enter. In the console window, you saw the log flows like a creek but there is no error and warning. So you are happier and want to open a terminal, you press command + space to open spotlight and type "terminal" then hit enter. In the terminal, you did your check and changes. There is only one problem -- you just opened too many configurations, its time to close them. 
3. Closing shortcuts combo. You press F3 the mission control to display all the applications, you then press F3 again to restore the view. Too much stuff, so you press command + F3 to take a look at your clear desktop, draw a deep breath then press command + F3 to bring back the mess. Let's start from Finder windows. You press command + H to bring all the finder windows to the front, then press command + option + W to close them all. You press command + tab to navigate through the applications you have opened. Then you close them with command + W. In case you just want to check how many windows are open for a particular application, you can press control + down arrow to view them. Notice command + W only close active windows for an application, to quit an application, press command + Q.
4. Reopening shortcuts combo. In case an application is minimized with command + M, you can maximize it with the following shortcuts combo: first select the application by pressing command + tab, then press option + command then release option key. The same trick can be used to reopen previously closed but not quit applications. To reopen a quit application, you press command + space to open spotlight, then type the application name.
5. Navigating shortcuts combo. You have opened many applications, you press command + tab to navigate through them and land on browser app. Your browser opened many tabs, you press control + tab to navigate through them and stop at a page. The page has tons of contents, so you press option + down arrow and option + up arrow to scroll the contents page by page. The contents is long and you loose patient, so you press command + down arrow to scroll to the end of page, nothing there, so you press command + up arrow to scroll back to the top. Eye balling doesn't work, no worry, you can press command + F to open a finder dialog. Then type in the search string then hit enter. The matches are highlighted, you press command + G and command + shift + G to move your cursor to the next and previous match.
6. Selecting shortcuts combo. Now you find what you are looking for, you want to copy those text. The shift control option command and arrow key combinations will let you look like a selecting pro. Try these out. shift + left selects one character at left, shift + option + left selects one word at left, shift + control + left selects everything at the left. I don't have to mention how right key behave, right? The up and down keys behave a little bit different. shift + up selects one line above, shift + option + up selects to the beginning of the current paragraph, shift + command + shift selects to the beginning of the text. I don't have to mention how down key behave, right?
7. Zooming shortcuts combo. It will be nice to zoom in when you are trying to show something to your co-workers. Press command + "=" increases the text size, press command + "-" decreases the text size. Press command + shift + "=" zooms in, press command + shift + "-" zooms out.