I agree with Liz:

Don't waste money on UV filters unless you are shooting in an area with lots of debris, salt, sand etc. They are not "protection." They break because they are thin, not because they are protecting anything.

Don't buy something until you actully need it. I know people who only shoot handheld, why buy a tripod? Do you shoot in conditions that need a flash? Most people don't, at least at first. Shoot first, load up on equipment later.

Even the extra battery... most batteries last all day now for most shooters. If you find you are shooting through an entire day and running out of power, then buy an extra battery. Most people seldom do this. For what it is worth, I buy third party batteries and find them to be as good as or, in one case, better than the OEM version. But the variability in these batteries tend to be higher than OEM.
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