The first question to ask yourself is do you want the land to remain open after you are gone. Second question are you willing to get a few more gray hairs to accomplish that. If you answered, NO to either of those questions stop here. I would see if there is a local non-profit conservation group in your area and contact them. Often they will have meetings, which you do not even need to give your name, where they will bring in a conservation holder group, an attorney that specializes in this, someone that has done one and someone that sells the tax credits. They will do a presentation, you can ask questions and you can pick up some material to read. Sometimes, they will make someone available for free to help you, but do not sign anything until you have an attorney read it. If your plan is to make money on the land this not the way to go. At least in the county in Virginia that I live in it is a way to greatly reduce your property taxes and not have an agricultural business on it. Do not let anyone rush you or tell you what to do. As stated earlier there will be restricts, if you think you or your family will want to live on the land in the future plan for that now. There will be some up front costs and they are not cheap. Most likely you need a current survey and an attorney to review the easement agreement. You are not locked into anything until you file the easement. On the tax piece, if this not something you understand well, if you can get someone to sit with you and pencil it out, it is not that hard to understand. Some people in advance cut off pieces of land to not be included in the easement. Often people will pay a lot more for land, knowing no one can build behind them. If you do decide to do it, in advance I would like to thank you.