I want to try slackware and started downloading frm slackware home site and got torrent to download its iso , 12.2 is now downloading . Is this the latest edition of slackware ..?

Yes, 12.2 is the latest edition of Slackware. Check the Slackware site for more information.

You can find helpful information here.

Slackbook

Additional packages and updated packages can be found here.

Slackware Package Browser

The Slackbook was what made me become a Slackware user. I was new to Linux and it did a great job of explaining how to install and configure Slackware. I was even able to get my fake hardware RAID controller working with Slackware.

If you're planning to use other operating systems to read your Linux files then you might want to format your Linux partition differently than the default. The default formatting uses 256-byte inodes for ext2 and ext3. Some software such as "ext2ifs" for Windows and Paragon Hard Disk Backup does not support 256-byte inodes.

To use 128-byte inodes you have to format the Linux partition yourself using a shell command.

NOTE: Replace the "hda2" with the correct Linux device name for your Linux partition. To use ext2 leave off the "-j" (journal) option.
You can verify the size of inodes using this command.

The "-l" has a lower case "L" not a one.
If you format the Linux filesystem yourself then don't format it again during Slackware setup.