What are your guys' Halo Wars tips? Like playing campaign on Legendary? I recently started playing again on 360 and was wondering what my fellow Spartans' tips are!
Here's a Youtube series a friend of mine created to help people get Gold on Legendary in campaign. There's a lotta good stuff in there.

And if you ever need tips for multiplayer, here's a playlist I always recommend. A lot of the vids are private now, but there's still a good chunk of content left. It's by Marco, who was a top 1v1 player back in the day. Even if you're not into 1v1, it's important to know them at least semi-intimately as skill in 1v1 transfers to team games as well.