The 20-year-old American centre-back made his debut for the Blues in last Saturday's 4-0 win at Aston Villa.
Miazga joined Chelsea from the New York Red Bulls in the winter transfer window for a reported £3.5 million fee after establishing himself as one of the top talents in MLS, but it was not until last weekend that he made his debut for the club.
The 20-year-old centre-back started Saturday’s trip to Aston Villa with Gary Cahill and Terry both out injured and put in a flawless performance alongside Branislav Ivanovic in the heart of defence to help Guus Hiddink’s side secure a comfortable 4-0 win.
Regarded as a long-term project, it remains to be seen how much more first-team action the one-time capped US international will see over the rest of the season, but in the meantime he is eager to learn from his skipper and the other experienced members of the squad as he tries to make his mark on the Premier League.
"I think the most important thing I've learned is the professionalism they have on and off the field," Miazga told ESPN FC. How they conduct themselves, how they make sure their bodies are always ready.
"I've seen John always training in the gym, keeping his body fit. The way he takes care of his body as an older player -- you've just got to develop those kinds of habits.
"Also on the pitch, the positioning they have. John's played over 700 games and you can see the little things he does, positioning his body with reading crosses and plays. If I ever have questions I ask and he's always willing to answer, so it's been good.”
Whether Terry is still at Chelsea next season to keep mentoring Miazga is currently unclear as his contract expires in the summer, leaving his future in the hands of incoming manager Antonio Conte.
The Italy boss, who led Juventus to three straight Serie A titles between 2012 and 2014, will officially take over at Stamford Bridge following the conclusion of Euro 2016 after his appointment was confirmed earlier this week, and Miazga is excited to work with him given how he helped Azzurri defenders Andrea Barzagli, Leandro Bonucci and Giorgio Chiellini flourish during his time with the Turin-based club.
"We're very excited about the arrival of Antonio Conte and the prospect of him coming,” Miazga told the Telegraph on Thursday. “But he has to finish his job with the Italian federation and we have to finish this season
“He came to the training ground and said hello to the players. It was brief introductions. He said hello to all the players, it was good to meet him."