When preparing a will(s) as a married couple does each person need a seperate will? Where can I find info?

Hi, I am looking for serious answers ONLY PLEASE. I recently lost my mother and as trustee I had to deal with all the legal issues. I now know the importance of preplanning. Does a married couple need seperate wills? What about a trust? I have one daughter age 28 who will be named as trustee and of course will have to deal with all the legal issues. Where on line can I find some good legal info on preparing a will/trust on my own? Are there any legal professionals who can assist with this for a very resonable fee? I believe I can capable of doing a majority of the prep work with a bit of guidance but might need some legal help to check it all over and possibly give a few suggestions. We do own a home and 40 acres of land . This is not yet pd. for but we have no other outstanding debts or loans. I also have gone to my bank and had my daughter added to my account and got her a key and use of my safe deposit box. Now I know that when my mom passed that having immediate access to the safety deposit box was so helpful as she left cash for immediate expenses and important paper work in there. I did learn that I definitely should have gotten a bit moreinfo from her in regards to banks where she had accounts as this info was no where in will/trust. There was also no info in will and trust in regards to investments she had through Edward Jones. I did know about that though as she had me take her to their office a few times. Now I had some of those investments passed on to me and am planning to have my daughter placed on that account in case of my death.Well of course hubby would have access to it if just I died but what if we both pass at once. What would be the most important things to have in safe deposit box for my daughter? Funeral plans, house/mortage info, bank accounts, some cash etc????I would definitely appreciate some good info from others who have gone through this and or are currently involved in planning for this. Thanks, Karen