Many people want to get started on modding/hacking/editing one of the games in the Fire Emblem series, but it's not easy to just suddenly start. What to do you do? Where do you go? How does it work?
Once a person gets started on modding the games, learning new things usually comes along smoothly. As a beginner, you're going to need a game to hack, which is illegal and cannot be found on any Fire Emblem site. You are going to need to be able to play the game using an emulator which can be found in the emulators section.
Using an emulator is usually as simple as opening the program and then opening the game, and adjusting settings for controls. Once you get a hang of using the emulator and some of its options, utilities and tools will be needed, as well as Nightmare Modules, all of which can be found on this website for download. Look around and find anything that you may need for your game.
Now that you have all these programs, you will need to start making use of them. Some programs have tutorials on using them while others are straight forward. Most consistent of opening the program, opening the ROM, searching for what you want to edit, and then editing it. Nightmare Modules can be opened with the Nightmare program and they allow you to edit many different aspects of the game. Most programs can be quickly saved by ctrl+s, however Nightmare requires you to hit both 'enter' and Ctrl+S.
Once you become very familiar with Nightmare, you can venture off onto other programs. Not everything will be straight forward and you will most likely need to ask lots of questions, however common sense and thinking things out are two major aspects to becoming a successful hacker. The Ultimate Tutorial is also a resource you can make good use of. Keep in mind, however, that despite how detailed it is, it will not teach you everything nor is it to be read once and simply understood--practice and experience are key.
With this, I hope you start editing Fire Emblem, have lots of fun, and remember to share your hacks with others!

The seventh installment of the Fire Emblem series (officially distinguished with the localized title of “Fire Emblem: The Blazing Blade” as of Fire Emblem Heroes), and the first to be released internationally. Released for the Game Boy Advance, the main portion of the game follows the adventures of Lyn, Hector, and Eliwood, as well as their many allies, as they combat the mysterious and sinister organization known as “The Black Fang”.

Best Fire Emblem Rom Hacks

Fire Emblem Universe is the best resource and community for rom hacking GBAFE. On top of Nightmare and Feditor you'll need Event Assembler and the suite of tools based around it. In fact, you could make a full hack without Nightmare or FEditor, as long as you have Event Assembler. This is an FE7 ROM hack, containing 26 chapters (prologue - ch.24 and a Gaiden chapter) It contains new events, maps, sprites, icons(not all) and story. (Not much in the way of other custom graphics, like UI, unfortunately).

As the first international release, the game features a miniature storyline at the start of the game (able to be skipped on subsequent playthroughs) which (on Normal difficulty) provides players with in-depth tutorials on the conventions of Fire Emblem- Lyn’s Tale, which follows the the first adventure of Lyn as she struggles to save the nation of Caelin from the diabolical machinations of her granduncle, Lundgren, who seeks to usurp the throne.

Gba Fire Emblem Rom Hacks Online

The game is also notable for informally introducing the concept of avatars to the series; the player plays a minor role in the story as a tactician for Lyn who first joins her in her quest during her Tale, and later returns in the main portion of the story- unlike later instances of this, however, the player themself is not a deployable unit, and functions as an NPC who assists Lyn, Hector, and Eliwood in the narrative. In addition, on subsequent playthroughs the player character can be removed from the story altogether on subsequent playthroughs of the game if the player chooses to skip Lyn’s tale, which is not able to be done in games with a deployable avatar.

The Blazing Blade is to this day frequently recommended as the most ideal entry point into the Fire Emblem series due to it’s comprehensive tutorial and introductory story designed to ease players into the franchise and it’s many conventions, both mechanical and narrative.