Noob ? here.

Hi all. Just got my Fire Stick and trying to download Kodi and whatever other programs so I can watch movies and shows. I’ve been through multiple youtube videos and have been able to DL Kodi but I only get so far. Each youtuber does it differently and it seems I get to a point where what’s on my screen is different than theirs. After couple days of “trying” to patch this all together I’m stuck,…and I’m not even sure what I’ve done so far is right. So I found this forum. I looked at the FAQ’s and such before posting so I apologize if my questions are covered. I’m overwhelmed with the amount of info here. It also seems that the info here is much more advanced than I can comprehend so it’s possible the answer is in front of me but I don’t see it.

I’m pretty computer handy. Hoping I can get some guidance, a link or something to help get me over the hump.

What I have…
Brand new latest gen fire stick, cable company provided wifi, smart home theater all connected to my tv.

I’m trying to download without my phone or laptop. Every posting I see seems to say this is the easiest way.

All the youtubers and other Google searched postings say to DL Kodi’s Android version. Why is this? Is it because the Fire Stick likes Android OS? (Not sure the answer is relevant but may help me understand all this better)

I already have Kodi installed but not sure I have the right version. It says “Build: Kodi 17.0-RC2 Git:bunch of #’s….(not sure if these other #’s are relevant). See below question for more on this….

Once I get to the Kodi download page they all tell me to DL the Androind ARM version. ***Problem is on their (youtubers and others) instructions it only shows “ARM” as a single choice. On the Kodi site it gives 4 choices. Release & Nightly build and 7a 32 bit & 8a 64 bit. I installed release build 7a but have no idea if this was the right choice? Advice?

Once I know from you guys if I have the right version installed I may have a follow up. If I have the wrong v, maybe this will help fix my next problem of not being able to figure out how to load the apps or add ons (not sure of terminology) so that I can watch movies/shows. I’m about halfway through a “how to” video of what to do once Kodi installed but stuck.

Thanks so much in advance!!!