Where can I get operating manual for ASUS TF 101B1?

it is in the system settings menu

Here is the manual
Support Manuals
The TF card slot is under the cover at the top near the camera.

http://www.central-manuals.com/downloads/downloads_tablets/asus/MeMO_Pad_FHD_10_e8319_ME302C_en.pdf

Hello download the manual here at asus:

http://www.asus.com/Tablet/Nexus/Nexus_7/#download

Select first android as operating system.

Open the manual folder and click on global for download.

The file has to be unziped and you need adobe reader to read the content.

Good luck

You may download a copy of the manual here.

I found the following link to the PDF version of the user manual:
http://dlcdnet.asus.com/pub/ASUS/EeePAD/TF300T/TF300T_MANUAL_en_20120423.pdf
There are 90 pages and it is approximately 80MB. Im on HughesNet, so I did not download it. Good luck.

You can try cloud print - but I had little joy with this.
I use HP E-print app - this works fine (if you have a HP wireless printer)

Follow up link for PDF:
http://dlcdnet.asus.com/pub/ASUS/EeePAD/TF101G/e6640_TF101G_Manual.pdf

You can download the manual in the language of your choice here.

Hello there, I will be your computer technician today. My name is Norman-Wynne Damstra.

Welcome to Fixya!

Click here to download the manual for your ASUS unit.

You may have to enter an Operating System.
Now click Manual.
Click Global under the heading of the manual in your perfered language.

Take care!
Norman-Wynne Damstra