Someone told me about a series of time travel books.  I forgot who the author is.  The central character is a woman.  Does anyone know what books these are? 

If not, can you recommend a good time travel book?

There are a LOT of books that fit that description. Do you remember anything else? 

Doomsday Book by Connie Willis is excellent, with a central female character. There are other books by Willis set in that same world, too, but it's not particularly part of a series.

the best time travel novel in the whole wide world Time and Again by jack finney. there is also a sequel called time after time. finney wrote the body snatchers but thesse books are not like that. he also wrote several short stories with a timetravel  theme to them. I have them somewhere but do not recall the title.

I bet it's the Outlander series, by Diana Gabaldon.  The series starts with Outlander,  about a  Scottish nurse who is flung into the past when she touches an ancient stone in Scotland.  It's all about her in the past and how she deals with it and her love life and whether she gets home.  Wildly popular, several more books in the series after this one.

Though I personally find Doomsday Book (mentioned in an earlier post) to be one of my favorite books of all time.  Witty, exciting, poignant, perfectly written.

Time and Again by Jack Finney is one of my favorite time-travel books.

I also enjoyed:

The Anubis Gates by Tim Powers

Dancers at the End of Time, by Michael Moorcock