I need info on making a Codicil to my existing Will

As with the original Will itself, in order to help ensure that your codicil makes appropriate changes and is validly executed, you really should consult an experienced estate planning attorney. Estate planning, which includes preparing Wills and codicils, is not suitable for do-it-yourself work. It is a very trick area, and, if you aren't lucky, no one will discover any problems until after you have passed on, when it is much too late to correct them. If you really care whether your wishes are carried out, you really need to consult an estate planning attorney. There's no way around that. Please also note: codicils really should be avoided. Ideally, you should have a whole new Will prepared, which includes the new provisions you want as well as older bequests you still want to make. It is much easier to understand and carry out the plan if it is contained in a single document, and it is much easier for mistakes to be made in trying to have one document make amendments to another one. Doing a whole new Will also helps ensure that it will work as well as possible in light of any changes to law which may have happened since the original version was signed. There is never any reason why you should stick with an older Will and modify it with a codicil instead of doing a whole new Will. It's usually NOT cheaper to do a codicil, because they are actually very labor-intensive to properly prepare. A Will is not intended to be a permanent document until the person who has made it is actually deceased. And finally, you should have the estate planning attorney actually review and discuss your entire desired distribution plan with you, and not just go in saying "here's what I want to change in this existing Will." The attorney ideally will have a lot of practice in thinking of potential problems with your desired plan, and should help you think ahead to ensure that your desired outcome will be what happens even if people die in an unexpected order or unexpected events take place. Unless you do very long-range planning for a living, you likely aren't going to think of the possibilities a practiced estate planning attorney will. And it can be extremely important to think of multiple possible outcomes, because life does not always or even usually turn out exactly the way we expect it to. Best wishes to you.