C.O.
If you have to pay to get the info - it's a scam.
talk with your boss and see if you can work from home two days a week - however, keep in mind that you are WORKING!!!
When I work from home - I get up and shower and get dressed - if I slack - it's because I wasn't mentally in the game and prepared for work. It's really easy to get caught up in everything - laundry, cleaning, etc. you need to pick a space that is for WORK ONLY - a room, office, etc. and when you are there - NO ONE can bother you unless it's an emergency.
Companies like Deer Park water and other chains like that - do have people who work from home - they have a dedicated computer and phone line and take calls that way.
Craigslist also has positions for people who want to telecommute. Some may request that you spend the first few weeks in their office so they can meet you and train you. Otherwise - you are good to go.
Bottom line - if they expect you to pay for training or to get the information - it's a scam.