How does a federal inmate file for a divorce ?

He should be considered a resident of the state where he is located in the facility, which makes it easier. All prisons are supposed to give inmates access to legal material in the form of some kind of law library. There are usually inmates that are well versed in court filings available to help other inmates (called "jailhouse lawyers"). Courts accept minimum filing requirements from inmates because of 1) the financial constraints and 2) the lack of access to legal help. If none of this is helpful, you can order a "do it yourself" divorce book from amazon.com or barnesandnoble.com to be sent directly from the publisher to the inmate (security requires this) and some of those books have basic forms he can fill out to send in, depending on the state.

I also recommend that he orders a copy of "the jailhouse lawyer's handbook" from the ACLU's national prison project. It is an extremely useful guide for inmates and walks them through court filings from inside prison, their rights, and other helpful information. Check the ACLU's national prison project website for contact info - last time I checked they sent inmates copies of the handbook for free. (I bought one at barnes and noble for about $7 I think).

lol, no I dot think so. The best thing to do would be to go and speak with a lawyer on the matter. They could give you the most accurate prices and best advice. I know that if there are no kids involved, then it sohould be relatively cheap