Lesson Three

Customizing Your Mac

There are a lot of adjustments you can make to the way your computer works. Sometimes this is wonderful.

If you overdo customization, it can eat up a lot of time and become a maintenance nightmare..

This lesson is oriented toward OSX 10.14, Mojave.

System Preferences

software update

Select  ► System Preferences.... You will see icons for preference topics. Click each one and you will see what you can change. Mostly the default values are fine. (When you finish with one topic, click the icon with the array of little squares to go back to the list of all topics.)

Web Browsers

Because of the many security problems with Adobe Flash, I don't recommend installing it. If you must, be very careful about getting it ONLY from Adobe and keeping it up to date.

In Firefox, Chrome, and Safari, I make a folder in the bookmarks toolbar called "daily" (by using Bookmarks ► Organize Bookmarks) and add my everyday favorites to it. Every morning, I click on the folder and select Open all in tabs to open all the listed sites, each in its own tab.

Make sure "Open 'safe' files after downloading" is NOT checked in Safari preferences. This is important for security.

Safari, Chrome, and Firefox support plugins, which you can add to your browser to change how it does things. For Firefox, I have installed:

Finder Preferences

It is useful to make a few changes from the default in the Finder preferences. I choose "show all extensions" so that file names will show the full name of the file, e.g. "Mail.app" instead of "Mail". I also disable the trash warning, to suppress a dialog box every time I try to empty the trash. I select "Customize toolbar" and add the "Path" widget to the Finder toolbar: it is helpful when you have several windows open and forget which is which, e.g. is this on my computer or a remote computer on my home network.

Login Window Wallpaper

Starting with Yosemite (10.10), the login wallpaper is a blurred version of the desktop picture. You can change the login wallpaper by installing the free app OnyX.

I actually built a little script to generate such login wallpapers for my computers, combining picutres with ImageMagick, and specifying a logo and a message with my mail address and phone number, so that if my computer is lost it might find its way back to me.

Lesson One | Lesson Two

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