The first place to start is with your family lore. Failing that, then you must turn to the census for the area(s) and year(s) you seek. You say your grandfather was born approx. 1890. Unfortunately, the 1890 census does not exist anymore, having been lost to fire. Some reconstructions have been made for certain areas from tax lists and other public records. It is most likely that he has died. Do you know when? Do you know where? Do you know where he's buried? Did he ever work at a job? Where? Did he ever attend school? Do you have any idea how many John or James Akins there are in the world, or have ever been? Currently I have 34 variant spellings for this surname! Are you sure of the spelling? Even so, perhaps your ancestor didn't care about spelling.
Your last sentence is most likely the reason you have not received much interest in your quest, "Please send me anything you might have." Many of us have hundreds of pounds of genealogical information. Are you going to pay for photocopying, binding and shipping, as well as labor and a truck to take it all to a copy shop, then return all to their original places in someone's home? I don't think so. Why should anyone be willing to donate gratis to you their hard won information when you have so little interest in your quest yourself that you have nothing but an approximate year of birth and a county and state, but no parents, no siblings, no middle names, no spouses, no children, etc.? Have you visited Green County, Kentucky, and checked local repositories such as libraries, schools and newspapers? John and James are very common names, you're asking for the impossible!
Please think about what you're asking when you post such unkind requests. Also, please don't respond to other posts with your own questions. Please write your own posts.
Please visit your local library and have a chat with a reference librarian to help get you started with some excellent genealogy seeking guide books.