The first issue introduces the protagonist, Boronwë, and tells us the origin of the Sisterhood. It also sets up the conflict between Boronwë and the princess Vandalis. That conflict takes centre stage in this issue, but first we get this lovely double splash as Boronwë equips herself with weapons and armour.

(click to embiggen)
That splash encapsulates several of the things that rock about this series: characters of varying body types, multiracial casting, and fantasy warrior women who actually wear real armour and have real muscles.
( less politics, more ass-kicking in this issue )So, issue 2 has: ninjas, pirates, drug trips, assassination attempts, sword fights, and psychedelic-assisted sisterly bonding. What more can you ask for from a comic? Well, the next issue has international politics, slave traders, and more pirates.
Christy Marx
has a website page devoted to Sisterhood of Steel; she has (I assume signed) copies of all issues available for sale, as well as posters and prints.