Theres a great video blogger who works with , shes a pro genealogist called crista. she did a video a couple of years ago about ‘how to research like a pro’.

In a nutshell, set out your research plan thus:
1) What Do You Want To Know?

2) What do you already know?
3) How do you know it?
(bounce back and forth between 2 and 3 until you’ve answered these questions thoroughly)

4) Where could you possibly find what you want to know?
5) Do these records exist? If so, where?

She also suggests using the NOTES section on your person of interests family tree maker file, to write down a timeline of information you’ve found – in chronoligcal order of the event (not in the order in which you found the info) so you can see what you know, how you know it, and identify periods of missing info too. (its explained around the 8 minute mark in the video)