It can be your own notebook, or you can use excel or paid options such as lion desk  

I also hit up individual investors in that market and start building relationships with them - they can help with all aspects - choosing people, neighborhoods, etc. and may eventually feed you deals. 

I've gone to three in the past 8 days that were all excellent and I didn't see the same people at any of them!

Last but not least: it's relationship building journey in which investor and syndicator get to know eachother and educate on all aspects of the deal.

I have an excellent referral for you

Some investors use Excel and that's it.

You provided me with excellent points and I truly appreciate the feedback.

Having a great relationship with an investor friendly title agent will make the process a lot easier for you among other things.If you find one in your area you can usually just call them up to speak to an agent or set up a meeting to talk in person and ask any questions you want about clearing title, the costs, timing, etc.

Interacting face to face will help tremendously with forming those critical relationships to aid your progress.

If everyone had excellent income, credit history, rental history and a clean criminal record, they would probably be buying, not renting!