The Find In Current allows you to search for a string. There are many ways to move around in the Document View window. Perhaps the most convenient is to drag the scroll column on the right. Of the buttons at the bottom, Back, Forward, and Home are most useful. Just click on the spinning globe.
Security Browsing the web is rather safe, but use common sense.
Don't download a program or follow instructions from a source you do not know and trust. To the Common Room or the departmental home page .