Default i need help to install ROM and how to install them

hi i am new on this forum and totally fascinated with your work guys.
i have sony ericsson xperia pro mk16i and i want to install ROM on my phone
but i am facing problems with understanding all the details and steps about installing the things
i am not sure how to use all the flashtools and other stuff to install ROM
i tried it once but my phone got bircked up. after everything i went through it got unbricked. i rooted my phone again and everything is fine now but m not sure how to get CWM and many things like twrp and etc are giving me hard time to understand process of installing please can someone give me some suggestions about it...

thanx.
big fan of XDA....