1996 Chrysler New Yorker do it yourself

My car has one or two bent valves, due to a timing belt malfunction. It was pretty worn and was begining to melt. (I was unaware that it needed to be replaced every 60000 miles)
i cannot afford to have it fixed and i've been considering doing it myself. My question to you is
should I attempt this? I have almost no expirence, but I do have someone to help me and my neighbor has quite a bit of expirence, mainly with dodge, ford ect, and is willing to give me a hand whenever possible. I am desperate to get this done and any advice would be greatly appreciated.
thank you