1/ Tabbed Browsing in Safari — You haven’t lived if you’re not using Tabbed Browsing in Safari, which lets you boot links from search pages into tabs along the top that you can then inspect at your leisure – way more efficient than going backwards and forwards trying to find the correct link from a search.
Assuming you are using tabs, here are some navigation tips. The pre-El Capitan option to use Command-1 through Command-9 for favorited bookmarks remains; after El Cap it has shifted to Command-Option plus a number to go beyond the first 9 tabs; the Command key by itself plus a number moves among the first nine tabs open.
2/ Jump a tab — You can use Control-Tab or Command-Shift-] to move from left to right among open tabs, one at a time, and Control-Shift-Tab or Command-Shift-[ to move from right to left. This includes pinned tabs (which sit at extreme left) which is a new feature introduced in El Capitan.
3/ Show All Tabs — Press Command-Shift-\ to review all open tabs (or click the button that’s by default in the upper right corner of the Safari window), which are grouped by sites for adjacent tabs that have the same domain (like docs.google.com). Press the keystroke, click the button, or press Escape to exit the Show All Tabs view. Show All Tabs can be slightly more useful, too, if you enable Safari in the iCloud system preference pane and Settings>iCloud on two or more of your devices logged into the same iCloud account. Then, Show All Tabs will reveal all tabs open not just on your Mac, but also on other devices down at the bottom of the scrolling window. This isn’t part of Handoff, but a separate feature, and useful in a different fashion. (These tab tips came from Macworld.)
4/ Fixing double initial letters — DO you do THis? I do. To automatically make the second letter into a lowercase letter, Microsoft Office has a setting, but OS X offers this ability system-wide as part of automatic spelling correction. This works in all of Apple’s programs and is available in other apps that take advantage of it. This autocorrect will drop in what OS X thinks is the ‘correct’ replacement as you type — it may sometimes be the wrong one if you’re using a specialised term or a special spelling, but generally, it’s the right choice.
In System Preferences, you can enable autocorrection in the Keyboard pane under Text. Check the Correct Spelling Automatically box. In individual apps, like TextEdit, Pages, or Mail, use the Edit > Spelling & Grammar sub-menu to make sure both Check Spelling While Typing and Correct Spelling Automatically have checkmarks. Many third-party apps have the same settings, picked up from the system.
OS X 10.11.4 Beta lets you protecting your Notes with a Password — One of the features in the beta of 10.11.4 is the ability to password-protect items in Apple’s Notes program– in other words, this will come to the public release of OS 10.11.4 once it’s available. In the Notes app for the Beta, there’s now an option to do so under the File menu. Select a note and click on that, and you’ll be asked to set a password and (optionally) add a hint.
There are a couple of important caveats here. The first is that any password-protected notes won’t show up on devices that don’t meet the requirements. So don’t add a password to a note you desperately need to sync to your iOS 9.2 iPhone as it will vanish from that device. Also, the password you’re setting isn’t just for the one item you had selected, but applies to all of the notes you password-protect from then on. The next time you try to apply a password to a particular note, you may be asked to enter the master one you set. And of course, you’ll need to put in that password whenever you want to actually read those notes in the future. So don’t forget it! A couple more tricks: if you need to take off the protection for a particular note, that option’s under the File menu; it’ll be labeled “Remove Password.” Also, under the Notes menu, you’ll find some useful choices like Set Shared Password.
There you can change the password you set, or you can reset it (which means that notes going forward will have a new password without changing the one you applied to previous notes).
You could also use the “Notes” menu to lock the already protected items.