time and tools are completely individual. someone has been doing something for several years, but there is no result. someone does not want to look for anything himself, but asks elementary questions on the forum. in my opinion, you need to have
1. an resource archiver and unpacked all FMF files
2. a good file manager that can search for files by content and normally display the search result
3. a good text editor that can highlight code and rgb colors
4. it is highly desirable to use github or similar to have be able to track changes and, in the case of errors not immediately detected, be able to go back 3, 5, 10 iterations
5. you need a file comparator by content