I recently started playing PLO. I'm playing zoom 0.1/0.25 - 0.25/0.5 limits and I'm doing just fine, but so far I am just playing the same way against everyone else, not using any tracking software, not taking notes on any player... So I decided to take my game more seriously and I have a few questions:

1.How are you guys marking your opponents? Recreational player, regular, tight, loose, aggressive, passive? Do you have different marks for regs like weak reg, good aggressive reg, nit...? What are the most common notes you take on your opponents?
2. Are you using Omaha manager or PT4? What are the stats you are having on your HUD and what are the stats you are paying the most attention? I haven't used any tracking software before and I'd be really grateful if you could explaing it to me or point me to some videos or forums posts regarding the matter.
3. What other software are you using besides tracking one?

I realise I have asked a lot of questions but I really don't know where or how to start, so it would really help me if I could get some advice from some of you, who have more experience.