Get it out of the knuckle, take a pry bar or something and pry it out of the transmission, slide the new one in the transmission then put the other end through the knuckle, reinstall the axle nut and make sure everything is working correctly.
Haynes has great manuals. As a mechanic I can say I’d replace both of them if you are able too because usually if one goes the other isn’t far behind.
The torque spec for the axle nuts should be around 217 foot pounds. Good luck on your project. Let me know if you need more help.

 

Also may want to drain the transmission or have a pan ready because transmission fluid will come out when you pull the shaft out forgot to mention that above.

 

Any videos or may a bit more details how to go about it right from the very beginning. And also any special tools needed to do the task. Thank you

 

Can’t find any good videos but will continue searching. When you go to remove it get the axle nut to the end of the threads and hit it out with the nut still on with a soft faced hammer. You need to remove the axle nut first before doing anything else and if you don’t have power or air tools do it before you take the car off the ground.

 

Check out videos on Youtube:

Check out the Cardone aftermarket (new) axles, at least in the US market:

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Transmission fluid WILL NOT leak out when you change the CV axle. A little bit of gear oil may dribble out of the transfer case depending on how much is in there and how high you jack up that side, however. Good idea to do a drain/fill of the transfer case, and don't forget to install a new axle seal while you are in there, easy to do and less than 6 bucks.

 

Torque spec for the axle nut is 193 pound-feet.