Hi there 🙂 The Adobe suite can be somewhat overwhelming for sure at first. Without knowing exactly what you want to achieve, it's difficult for someone to recommend a certain product. Premiere Pro and After Effects are actually radically different, with completely different use cases. Truth is, Premiere Pro probably doesn't offer one tenth of what After Effects can do. AE is like a bajillion times more complex than PP... but depending on what you're doing, that may just mean that it has a bajillion features you'll never need.
Imagine you're doing a feature film: PP is where you would cut the whole thing together, and mix the video with the soundtrack. The final export would come from PP. AE is where you would, for instance, composite the part where the actors set themselves on fire and supernaturally walk through a wall... (see now you have my imagination running wild...) and whatever other special VFX parts the movie might require. Then, those particular composites would be brought back into the main PP timeline. Or, if you have a place in your video where you want advanced motion graphics, you do that piece in AE and then bring it into the main PP timeline with the rest of the movie. You can't do crazy VFX or motion graphics in PP... on the other hand, trying to cut and export a complete movie from AE would feel like traveling across the country on a tricycle, depending on the scope. They're just not made for the same purposes, although they work very well together.
In case you're wondering, Audition would be where you could edit the audio of your movie with professional granularity and tools. And, similar to AE, when your audio is how you like it, you can bring it back into the main PP timeline under all your video.
Be aware though, if you're not already, that these are each professional level tools. They are not simple at all. Each has its own steep learning curve. I spent over a year just working almost exclusively with Premiere Pro before I felt confident that I could accomplish just what I wanted with it. And I still had not completely mastered the program. AE and Audition are also each their own worlds to get lost in. Hey, at least the journey is fun... (if you're the right kind of nerd).
Side note, if this is all new: out of compassion for you, I strongly suggest that you get good guidance on your computer before beginning all this. If you're a Windows user, do yourself a favor and check out the information that Puget Systems offers. Even if you don't buy a machine from them, you'll gain insight you badly need. If you're a Mac user, I'm not sure where to point you but ask around! Not any old computer will do. You may already know this but I have no idea what you do or don't know. Just trying to save someone the headache I had in the beginning.
If your end result is going to be somewhat simpler, and you don't need or want to tackle a steep learning curve, then either Premiere Rush or Premiere Elements are perhaps what you want (if you're sticking to Adobe products). Both could be looked at as Premiere Pro's younger siblings. Rush is more mobile focused (although it has a desktop client also), and Elements is just desktop. Rush is subscription, and Elements is a one time payment. Since Rush is part of Creative Cloud, it's easy to move projects back and forth between Rush and Pro if necessary. Details about their features are easily found.
Hope all this helps! Sorry for writing longer than I anticipated.
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