Welcome back to
40K and welcome to Dakka man.
On top of the Article section, there is also this (
http://www.dakkadakka.com/dakkaforum/posts/list/327831.page) that has a great source of information. The 'mythbuster' tactica in particular is a great source of advice.
Regarding your warriors; they've gone down significantly in effectiveness with the latest Codex it seems; now they're very vulnerable to instant death, which is not a good thing by any means with such an expensive and important unit. You'll have most people warning you away from Warriors as a result of this.
I'm not a Tyranid player, so my advice is simply from observation, but if you have your warriors foot-slog up the board, they're unlikely to make it in one-piece
IMHO. As such, I'd personally put your main options as:
Spod:
This allows your warriors to arrive right in the face of the enemy and where they're most vulnerable. They would however have to weather a turn of firepower before they could charge (therefore getting them some ranged weapons could work), but this would also mean the rest of your army would be pretty much unscathed for this turn. They'd be unlikely to survive, but they'd be a distraction at least. Admittedly, this idea is clutching at straws for a use for them.
Outflank:
Use a Tyrant or Swarmlord to allow your Warriors to outflank; I'd imagine this is your best chance to get them into combat.
Again though, I'd recommend the above link.
Good luck man.