Default Sony SGP321 and CWM

Hi
Because this is my first post. I would like to present himself. My name is Z. Jonski.
I bought Sony Xoeria Tablet SGP321, which is my greatest entertainment. I am cancer patient and I do not turn out.
I have a very serious problem with my SGP321 or maybe my knowledge .

I can not find the true and checked information about Sony Xperia Tablet Z - SGP321.
I want and I have to install CWM and change ROM on Android 4.4 KitKat, becous I want watch TV on-line.
Android 4.3 which is on him, does not serve the programme IPLA where I bought up subscription on TV.

Instructions about CWM to SGP321 do not work. I am ill and chelpless.
The most of the instruction is written an understandable language for professionals .
Help me please or give me websites for exaktly to Sony Xperia Tablet Z, Clockwork Mod Recovery to SGP321 etc.
I will very grateful for every one, who understand my sytuation.

Regards - Zibi