When at the WTC Path station, follow the signs for the E train station. One of the fastest way to get there is this,

1. Exit the Path turnstiles.
2. Walk to the center of the mall where the Apple & John V stores are.
3. Turn left and go up the escalators one level.
4. On the upper level you will see a Walgreens and a Starbucks store. Turn right at the Starbucks and walk through the glass doors.
5. Now you will be at the E train platform, Turn left and follow the signs for the AC 23.
6. Walk north though the mezzanine hallway until you see a row of turnstiles for the A&C platforms.
7. On the left of those turnstiles you will see turnstiles that will directly to the 2/3 Park Place platforms. Also there is a globe artwork, around where the 2/3 turnstiles are.

It maybe better or simpler if you use the 1 train WTC station and transfer to the 2/3 at the Chambers St 1-2-3. The WTC 1 train station is directly above the Path station. At the WTC Path station, exit the turnstiles look left where the Path fare machine are, directly above you see a big 1 sign. That's the entrance to the 1 train platforms. Use the 1 train to transfer to the 2&3.

I going to miss this store. I surprised it was only opened for two years. It seems it was opened longer than that. Going to the Brooklyn one is such a hassle sometimes. Waiting for the B61/B57 can be annoying many times and they stopped running the free shuttle bus years ago.

Yes. The Path and the subway are two different services. You need different monthly passes for both services. A monthly metrocard can be used on the subway and it costs $127. Path trains monthly pass is the Smartlink card and costs $110. You cam buy a monthly metrocard at any subway station. You can buy the Path Smartlink card at some Path stations or online.