online or in a bookstore?
personally i currently buy most of my books in online versions- ie electronically.
mainly cuz i can read them at work when i got a "dead period"/want to take a few minute break from work.
I am a sci-fi/fantasy book reader and get Most of my books from
Baen with their webscription service:
15 dollars for ~5-8 books that come out in a particular month, or
5 dollars for an individual book OR
for your Favorite active authors, they have E-Arc's (advanced reader copy) which are early versions of books due to come out anywhere from a month to 8 months later for 15 dollars-one book i got in may and it hasn't been published in paperform YET(december)...
i have 13 e-arc's and ~110 "ebooks" from monthly purchases..
my favorite baen author's are
John Ringo
David Weber
&
wen spencer (doesn't write enough imo)
as well as several others
Baen also has their
Free Library with alot of good books there..