[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] BCSC:
CWM does not cost money. Rom Manager uses that option as a way to make money and support the Cyanogenmod guys. If you like the product you can buy it as it is made by the same guys who make the Rom. Though you can install it quite easily for free, and if you like I will post instructions on how to do it at the end. To update CM10.1, you can do anything from stable to nightly from your settings menu. Go to settings/about phone/ cyanogen updates. Set the option to 'new including nightlies' and you will get a notification when one is available. You can switch from stable, to nightly without having to back up anything. I will highly recommend an app called Titanium Backup Pro. It costs 5 bucks but is worth it. It will backup all apps and data so you wont lose save games or anything. You can store your backups off device and if you screw up the OS you just wipe the OS and restore all your apps and data in one go. it does contacts as well, though I recommend syncing those to Google.

Hi, my name's Brandon, and I'm a flashoholic. As for my Roms, I've been through about 8 in the last month. I'm a huge fan of Touchwiz so I stick to modified versions of stock and each has its own weakness and strengths. Hyperdrive and MSG $ Chubbz are my favorite. I'm not sure how much you've been exploring the site so here's a quick reference in case you don't know. Your main landing for everything involving your phone is here: http://xdaforums.com/forumdisplay.php?f=1705. Most of the sections are obvious, but if you want modified stock Roms you go to 'Android Development'. For full custom AOSP roms like CM10 and AOKP, you go to 'Original Android Development'. What you chose is only up to your style. Whether you need battery life, UI look, etc. As for Odin, I'm not entirely sure if the version matters. I have read that if you are flashing a Stock firmware that you need the most recent version. I always have used the most recent just because the version number is bigger and I'm a geek like that. If you have more questions feel free to ask, I wish I had someone knowledgeable when I started this. May have saved some headache. I sent you a friend request, feel free to PM me and I'll help how I can.

Now as for updating your CWM, it is really quite easy and only takes a few minute. The only important thing is to be sure of your typing as you will be using Terminal (https://play.google.com/store/apps/details?id=jackpal.androidterm&hl=en) to access the Android file system. Here are the instructions:

Follow these steps exactly and you will have the latest CWM running.

1) Download correct Clockworkmod Touch for your device from http://download2.clockworkmod.com/recoveries/recovery-clockwork-touch-6.0.3.1-d2att.img

2) Rename it to recovery.IMG and place it at the root of your internal sdcard

3) Download and install terminal emulator from the Play Store

4) Run the terminal app and BE SURE OF THE TYPING

type: su (press enterand allow root access)

Then type without quotes: "dd if=/sdcard/recovery.img of=/dev/block/mmcblk0p18" (press enter)

Notice the space between dd and if.

Thats it. It only takes about 2 seconds after entering this command and you will only see something about 'records in and out'. You can now reboot and enjoy Touch CWM

5) Enjoy your Clockworkmod.