The novel is about the Pargiter family, and it covers the passage of time from the 1880's until the "present-day" which is in the 1930's. However, it is not a continuous account; so do not expect a long drawn out family story, tracking the characters from start to finish. Instead there are 11 chapters each titled by the year it is set in. Therefore, there are gaps in between the years, as not each year is documented.
Furthermore, each chapter is quite specific, dealing with a day of that particular year, and describing events occuring for a few of the characters. The events tend to be "every-day" occurences.
If you are looking for an easy read, then maybe move on to something else, as you do need to recall the various character names and how they are related.
HOWEVER, in my opinion this is one of the easier Virginia Woolf novels I have read, and I thoroughly enjoyed it and recommend it very very highly. I particularly liked the way each chapter started of with a brief description of the weather at that time, so you get a seasonal pattern almost, with variation in weather between chapters.
This book deals with the passage of time, and the way that experiences are unique for the individual; so even if two people are looking at the same thing, they will be seeing it in a different way and if asked to describe it, will give different accounts. To make things more difficult, imagine trying to give a description of someone else, how difficult it is to encompass their whole character, their experiences, what makes them a person; the book gave me a lot to think about and it really was mind-blowing in a subtle way (!)
I hope you decide to go ahead and read it, especially if you are a Woolf fan!