I too started with one tree and it got so big that I ended up having 8 large notebooks full. I ordered birth, death, marriage certificates for each person to put in the notebooks that they got so large I had to start a different notebook for each branch. It was easier when I lived in Denver since the Federal archives are located there and you can just go in and go through all the tapes for free. Of course that was in 1995 and probably put it all on disks now?? 5 or 6 cities have those archives and also any mormon church in any city has a genealogy section in the back of their church that you can use for free and not be a member or a mormon but I found it easier to go to the Federal archives but now everything I found is on line just about at ancestry.com. I have almost more than they provide me with. I started out with my mother and her father's side of the family with a whole book and then had to start another book with her mother's side of the family. Then I did the same with my father's father and mother etc. Another for my husband and his mother and father's side etc. so it started getting crazy especially when the irish catholics all had 14 kids and each of them got married to different names it can make your head spin after awhile and you just have to stop and take a break sometimes. Sorry to ramble.