That depends on how much science you're using, and how much handwavium. There's a place for both approaches, so have fun with it. Don't be afraid to do a little research.
You can look at classic Terrestrial battles, to see how deceit and ambush worked. Already-published sf&f has some great examples. Iain Banks' 'Culture' novels and Lois McMaster Bujold's 'Miles Vorkosigan' novels have some interesting takes on space-battle ambushes, and bring up the factor of information-delay due to speed of light transmissions. Communication has always been one of the key factors in winning any battle: can your guys get info faster than the other guys?
As for neat tricks and traps, we're all familiar with hiding in nebulas and asteroid fields, courtesy of 'Star Trek' and 'Star Wars'. 'Firefly' used ships' graveyards as hidey-holes, really nasty magnetic nets to snare ships, and a 'Cry Baby' fake distress call to lure away law enforcement.
Science itself comes up with neat new opportunities, if you check up with astronomy blogs and government sites. For example, here's a bit that came up from my hazy memory of an astronomy podcast last year:
"The boundary between the sun's influence, known as the heliosphere, and interstellar space is thought to consist of four onion-like layers: the termination shock, where the solar wind grows increasingly turbulent as the sun plows through interstellar space; the heliosheath, where the wind grows turbulent and get compressed and heated; the heliopause, Voyager 1's current location, and the bow shock, the outermost region where the solar system in essence generates a wake in the tenuous gas and dust between stars."
Apparently, when they say the heliosheath gets hot, they mean it: around 100,000 Celsius. That's not the millions of degrees predicted, but it could affect an unprepared ship or an already-damaged one. Maybe heat-activated explosives sneakily placed on their hull?
Closer to a system's sun, you could always trigger or predict a solar flare and force your enemy into a race with one. Mini-black holes and other oddities are also tasty hazards, but are as dangerous to your guys as to the enemy.
Good luck!