
Yeah. I don't care if I die in the game. I poke around every corner of the level before moving forward exploring. That's just the way I do it. I heard a podcast or read a forum post that said something like you shouldn't worry about collecting your body all the time or doing so will make you hate the game. Just move forward in spirit form and farm souls later. Defeating large bosses or mini bosses give you lots of souls anyway so you can still buy nice upgrades and things. If you have the "Cling Ring" I mentioned you will have a bit more of health in spirit form and just focus on strategy, kind of like chess really. Look at me! I'm not even an expert but I'm going all "Yargz" on you. LOL.
I’m not a vetaran Fire Emblem player, but I have managed to get to CH 11 and complete side quests and map battles. Some tips that helped me.
Do partner up everyone. Everyone! You might get less movement, but it’s safer and you have better chances to survive if you get ambushed.
Carry two weapons: one ranged weapon and one close range weapon. Sometimes you will be within one square of attacking enemy and you can shorten the gap with a ranged weapon.
Do build relationships with partners. They will add useful buffs and defense during fights.
Press X before every battle and view reach of enemy attack range. Cycle through units both yours and enemies with L and R buttons.
Try to have fun and take in the music and story.