Any way that I can "subscribe" to a person on this site?

I'm not sure how you would do that.  Besides, you could end up with a lot of useless e-mails in the process.  Personally, if I wanted to track someone here I would just click on their name in the list of popular authors and bookmark that page.  That way you could just review posts at your convenience.

I know what you mean.  When I renewed my license, I entered "Read 110 hours of @IRonMaN postings" in the list of CPE hours.  It went through.

I joined the @George4Tacks  Fan Club but unfortunately had to quit when renewal fee went thru the roof.   Heard it had something to do with the cost to make the envelope moving.

A cheaper way is this: Do you see the list of "Top Solvers" on your screen?  If you find your idols there, click on their avatars and you'll see their recent postings.  That's all I can think of...   

Happy idolizing...

I looked around a bit but I couldn't find any way to do it.

Interestingly, if you look at IronMan's profile, he lists some impressive things about himself, such as the number of states that he is proficient with preparing.

https://proconnect.intuit.com/community/user/viewprofilepage/user-id/_38