Users of customized versions of JournalTOCs can choose from the following alert frequencies
I don't see the Journal I want to follow when I look at the list in JTOCS.
When I click on the link to get to the article the site asks me to log in.
Are there limits to the number of journals I can follow?
No. Some people follow 5 journals and others follow 80. You can decide.
Sometimes I get an alert email with only one title. Is this working properly?
Yes, that happens. There are a fair number of e-journals who roll out articles as they're ready. If the frequency of emails is a problem you can customize your settings.