The easiest way to learn programming fundamentals, Pascal, Simba, and SRL is through RuneScape scripts. This is the entry point that our community has historically used to facilitate learning.
Some recommended threads to read/understand/follow:
one two three
Perhaps most important would be the suggestion to join the IRC or Discord (preferably both) as that is where most of the community tends to reside and you will get the most exposure there. You will receive more support and more help. The links are present in my signature.