A problem with leaving a puppy on it's own at home is it's likely to start chewing furniture and causing other damage which will then lead you to telling it off and in turn will lead to an unhappy dog that doesn't look forward to you coming home, The only other option is to cage it while your out.
Unless your all 100% committed to looking after the dog and it's needs then don't get one, Too many people get dogs and then after a while can't be bothered with all the work that goes with them.