Basic Fire Emblem strategy

Recently, I bought Fire Emblem: Awakening. It has become my favorite first-party Nintendo 3DS game, and I am so addicted to it. My favorite character so-far is Lon'qu.

When it comes to playing Fire Emblem, there are some strategies you must take:

• Do not use Jagens or Oifeys, except Frederick in Fire Emblem: Awakening, where you should use the Second Seal on him to demote him to Cavalier.
• In Fire Emblem: Awakening, demote the prepromoted units with low base HP (using the Second Seal).
• Do not overuse the same unit or a maxed-out unit.
• Have your lesser trained units finish off the enemies.
• Train up the Ogmas and Nabarls.
• Train up the Cains and Abels.
• Conserve rare weapons, especially Brave weapons.
• Give the Brave Swords to the Myrmidons and Swordmasters.
• Do not use Devil weapons, except under dire circumstances.
• Forge Bronze and Iron weapons. Add Critical Rate bonus when forging a Bronze weapon.