A bit of a newb question, but is it possible to graph an entire executable or dll with IDA? I know this might be quite large, but with 20-30 different functions in the app i'm looking at, it might help visualize things.

How does everyone else get started when reversing a piece of malware? Just look for some interesting strings and then go from there?

It'll take an extremely large amount of time, and based on the fact that IDA's graphs aren't that easily navigated, I doubt it would make it much clearer anyway. (Also, you need to select *only* code, areas of data tend to make it divide by zero...)

I start at the entry point, obviously.

Some good starting points are often:

1. Strings.

2. Imports.

3. Exports.

4. The entrypoint of the executable.