Opening apps on your Mac doesn't have to be a drawn-out process just because you have tons of software. Using the Spotlight function that's built into OS X, you can quickly open anything with just a few keystrokes.
You can call up Spotlight by either clicking on the small magnifying glass with your mouse cursor, or by pressing Command+Space. A small search field shows up instantly, and you can start typing right away. Hitting Enter at any time will open whatever item on the list that you have highlighted.
As you type, Searchlight will automatically fill the list of results with whatever best matches the characters that you've entered. Apps will get higher priority, putting them higher on the list — so if you were to pop open Spotlight and start typing "saf", Safari would show up as first on the list. Other documents, files or folders will follow down the list.