If you’re not a programmer – why do you need WRKDBF? You shouldn’t really be altering data in the files of your application unless you’re a programmer/developer and have an understanding of the effects of such changes. I doubt that the suppliers of your business software would be happy for you to be using something like WRKDBF on their files. If they request for you to do something like this, then I would ask them what tool do they use.
If you only need to look at the data then you should be able to use Query.