Welcome to the boards!
I would encourage you to stick to the colour side of things when exploring Simba. I find it infinitely more rewarding compared to reflection. Unfortunately there has been an obvious dip in the number of quality colour scripts since the availability of a public reflection include which is a massive shame considering this community was grown from Simba's capability as a colour bot.
As you have identified, there are a huge number of resources available for your learning. Given your familiarity with Java already I would recommend the following threads for going over the syntax of Lape/Pascal:
Lape -
https://villavu.com/forum/showthread.php?t=105024
Beginner Tutorial -
https://villavu.com/forum/showthread.php?t=58935
Style Guide -
http://jvcl.delphi-jedi.org/StyleGuide.htm
Best of luck!