Definitely not trolling in any way.
I'm relatively new to the series. I was literally introduced to P4 within the last year. I followed that up by looking into the music and have enjoyed the game and other things related to it. It's now one of my favorite games ever.
I honestly would like some direction on what games/info/etc...to look into. I know nothing about Devil Survivor for example. Are there other games I should look into? What platforms?
Many of the SMT titles released within the past decade came out on PS2, so you would want to have one of those or a PS3 with PS2 BC. This would include games such as these:
-Shin Megami Tensei: Digital Devil Saga 1 & 2 (features a set party focusing on people rather than demons, with more emphasis on story and characters than what tends to be the case with mainline SMT; very good starting point, and uses the same Press Turn system introduced in Nocturne and modified as the One More system used in P3 and P4)
-Shin Megami Tensei: Nocturne (third installment in the mainline series, with a particularly dark and bleak post-apocalyptic atmosphere, as well as a more minimalistic story; the lead character and Dante from Devil May Cry aside, your party members are limited to other demons, which you can recruit through negotiation or create through fusion)
-Shin Megami Tensei: Devil Summoner: Raidou Kuzunoha vs. The Soulless Army and Shin Megami Tensei: Devil Summoner 2: Raidou Kuzunoha vs. King Abaddon (these are action RPGs set in 1920s Japan, with many favoring the story in the first one, yet regarding the second as the much better actual game; as usual, human lead, with lots of demons to recruit, yet there are also different investigative skills varying according to the type of demon used in the field that allow you to overcome obstacles, find items, or obtain new information)
If you own a 3DS, you can check out Shin Megami Tensei: Devil Summoner: Soul Hackers (an updated port of a turn-based, cyberpunk Devil Summoner originally made for the Saturn and PS1), as well as Shin Megami Tensei IV (probably has the most polished presentation of a traditional SMT). There's a 3DS port of the original Devil Survivor called Devil Survivor Overclocked, though the 3DS port of Devil Survivor 2 has been delayed until 2014 (you could always just play the original DS version on 3DS, though). I don't know as much about the Devil Survivor games (other than being under the same Megami Ibunroku banner that P1 was), which are strategy RPGs, so I'll just let someone else cover those.
EDIT: Forgot to mention Shin Megami Tensei: Strange Journey, which is another DS game (first-person dungeons and combat like with Soul Hackers, but focuses on a mission to investigate a void that appears at the South Pole).