Hi Kim
first off, it will not be all that bad, take a deep breath you can do this..
I have been pto president for longer than I would like but that a nother story, We just lost our vp and got a new vp, this is what we did to make thing smother for all. I invited both the former vp and the new vp to my house for coffie, I asked the former to bring all of her books and asked the new to bring a 3 ring binder and some deviers. We spent 3 hours together and went throught every event, We talked about the who, what, and why.. I gave her coppies of our by-laws and made shure she understood what was going to happen.. She left that day feeling a little worried about if she would be as good as our last vp, (I was a little worried too...) but the new vp and I got together and talked that over to and now we are feeling good about it all..
try calling the former president and see if she will meet you for coffie and talk about the who, what, and when , and why. She can also tell you things like what worked and did not work in the past. give you hint or were to get donation. Seeing that you all ready hold a office you should have a coppie of your bylaws and account statments and have a good idea of what need done. You may just need her to tell you what the president's job duties are for each event. Take it one event at a time you will do a great job..