First, please visit the URL
http://www.centrair.jp/en/to_and_from/access/train.html
Based on this map, I describe the way (by train).
(1) CenterAir → Kanayama St. (Meitetsu Airport Line)
You start from CenterAir (Central Japan International Airport) by Meitetsu Airport Line, and get off the train at Kanayama St.
(CenterAir → → Jingumae → Kanayama (→ Nagoya))
Mu-sky is the express and you need an extra charge 360 yen.
Local train is slow and takes a long time, I do not recommend.
(2) Kanayama St. → Sakae St. (Subway Meijo Line)
Switch to the Subway Maijo Line (Nagoya Municipal Subway) bound for Sakae, Ozone (Clockwise). Take track No.2. You need to buy a ticket of 210 yen.
(Kanayama → Higashi Betsuin → Kamimaezu → Yaba-cho → Sakae)
Get off the train at Sakae station (All trains stop at Sakae).
Maijo Line Subway Logo
(3) Sakae → Hotel (Walk)
After exiting Sakae station (Exit No.1), walk northwest for about 7 minutes as below. You will arrive at the Hotel Nagoya Garden Palace.
(1) Hotel → Fushimi St. (Walk)
Walk southwest for about 9 minutes as below from the hotel to Fushimi Station on the Nagoya Subway Tsurumai Line.
(2) Fushimi St. → Tsurumai St. (Subway Tsurumai Line)
Take the subway Tsurumai Line train bound for Akaike. Take track No. 3. You need to buy a ticket of 210 yen.
(Fushimi → Ōsu Kannon → Kamimaezu → Tsurumai)
Get off the train at Tsurumai station (All trains stop at Tsurumai).
Tsurumai Line Subway Logo
(3) Tsurumai St. → NITech (Walk)
After exiting Tsurumai Station, walk east for about 5 minutes. Then you will see the main gate of NITech.
(1) NITech → Tsurumai St. (Walk)
Walk west from the main gate of NITech toward Tsurumai Station on the JR Chuo Line. (Be careful not to confuse this station with Tsurumai Station on the Subway Tsurumai Line. Subway Station is underground, while this station is above ground.)
(2) Tsurumai St. → Kanayama St. (JR Chuo Line)
Take the JR Chuo Line train bound for Nagoya (Track No. 2). You need to buy a ticket of 150 yen.
(Tsurumai → Kanayama (→ Nagoya) )
Get off at the next Kanayama station (All trains stop at Kanayama).
(3) Kanayama St. → CenterAir (Meitetsu Airport Line)
Switch to the Meitetsu Airport Line bound for CenterAir (Central Japan International Airport) and get off at the Airport station.
(Kanayama → Jingumae →→ CenterAir)
Mu-sky is the express and you need an extra charge 360 yen.
Again, local train is slow and takes a long time, I do not recommend.