I recommend you start with a modpack. That said, not just any pack will do. My absolute favorite is TPPI2; I think it's by far the most professional one, but i

I recommend you start with a modpack. That said, not just any pack will do. My absolute favorite is TPPI2; I think it's by far the most professional one, but it does require a pretty hefty machine. If it doesn't work, then there are a number of smaller/more specialized packs that likely would.