As far as personal preference goes, I like:
lasso stance: back + 1, 1, 3 then 2, 3 followed by j3, db3(EX it if you want if you're really feeling yourself) In the corner, you can keep doing 2, 3 for 4 or 5 reps and cancel the last rep into her twirl/kung-lao spin. You can also start it alternatively with 3, 3 since the first hit is low.
Sword and shield: no clue xD. If I want to troll and I have 4 meters I'll do 2, 2, back-forward + 2(EX) and loop it 4 times, the last ending with 2, 2, 3. Or I'll only loop it twice and use the last two meters for a transition if I'm trying to be sexy. It's 50% dmg either way most of the time. It's a hella waste of meter(especially if your opponent still has their breaker), but it sure looks cool to end the match with it.
TYM is a pretty good place for more valid info though. That's just how I like to play.
I haven't messed with Wonder Woman since the demo, but as far as I know none of the combos I was using then are axed, so here's what I found in that time:
Lasso stance:
Combo starters: 1,1 ; d+1 ; 2
Ender: XX Lasso Spin, 2,3 b+3 (wallbounces) jump up-forward into late air 3, b+1,1,3 XX Lasso Grab
Combo starter: b+1,1,3 ; 3,3
Ender: 2,3 b+3 (wallbounces) jump up-forward into late air 3, b+1,1,3 XX Lasso Grab
Combo starter: b+3 ; f+3
Ender: jump up-forward into late air 3, b+1,1,3 2,3 XX Lasso Grab
Sword stance:
Combo starter: 1,1 ; 2 ; probably a string or two I'm forgetting
Ender: ~4 into Lasso Spin at the earliest moment after the stance switch, 2,3 b+3, jump forward air 3, b+1,1,3 XX Lasso Grab
The link from the Trait switch to the Lasso Spin is difficult to get used to but is most likely essential if you plan to make use of Sword and Shield stance at any time midscreen.
In the corner, Sword stance 1,1,b+1 can lead to high damage in juggles, and you can again use her Trait switching to go from Lasso to Sword and still combo, at least off certain launchers:
http://www.youtube.com/watch?v=O5BkWZg86O4
I imagine there are probably better combos that have been figured out for her out there by now, but this should give you a start.