When I first got started, gathering information and records was the key focus. No one told me until my first genealogy conference about 1993. Note that I did not mention recording sources.
After learning the importance of documentation, I had to do a lot of back-tracking! The Family History Library catalog helped. If the FHL had a book I used, I could get the source info that way. For others, I had to wait until I could access the book or film.
BEGINNERS: CITE YOUR SOURCES!!!