Amit there are no manual edits that you need to do apart from .htaccess rules which you will most likely need to insert into the existing file. Apart from this, you just need to change the permission for couple of folders, which is explained here
WordPress › WP Super Cache « WordPress Plugins
In case you need help with it, let me know. If I am online at that time, I’ll help you out. Do take a backup of your database, wp-config.php and .htaccess file before you start installing it.
As for sociable, you can get it here,
WordPress › Sociable « WordPress Plugins