Ensure your account email is correct if you wish to receive email notifications. It should be correct if you registered your account in the normal way, unless you've changed email address since you registered.
If you would prefer to only receive notifications by instant notification and avoid filling your email inbox, then tick the "Only Instant" checkbox, and click the Update button.
Tick the boxes for monitors you would like to receive updates for, and when done, click the big update button at the bottom.
Note, all of the Settings and Monitors tabs are actually displayed from one web page, so you do not have to Update on each one, you can click through all the tabs and check/uncheck the options you want, then click Update once, when you've finished, to save all your changes..
Some of the monitors allow you to filter notifications based on Keywords contained in the posts, or to be more accurate the post titles
To use this facility: