In Salesforce personal settings are located in My Settings.
Step 1 : At the top of any Salesforce page, click the down arrow next to your name.Depending on your organization’s user interface settings, you should see either Setup or My Settings in the menu.
Sep 2 : From the menu under your name, click Setup or My Settings.
Step 3 : Do one of the following
If you clicked My Settings, look on the left side of the page and click a menu item under My Settings to display its sub-menu, then click the item you want.
If you clicked Setup, look on the left side of the page and click a menu item to display its sub-menu, then click the item you want.
You can do the below setup in My Settings
This blog information is very useful to learn about My Settings options.