Welcome back welcome to RG!
Watch the vids in Sic's signature and then mess around with Kissassist, RGmercs and mostly cwtn plugins. Lots of info and videos on them here and a super helpful community when you get stuck.
I suggest taking the toons somewhere safe and lower level at first to get your feet wet and explore the automation options. You can also /testcopy and use the cwtn plugins there for free.
Check out the macros and Lua's available as well like buttonmaster, mq2autogroup, mq2autoaccept, and more.
Time to subscribe to level 2 and begin a journey you won't regret. This community makes the game great again.