Q: Before I buy...

everything in your linked example can be accomplished in Motion5.

But…

1) don't know what you mean by 'icon packages' - for sure, you can import any graphic into M5, to be precise: M5 is no 'paint.app'; what I would do, is creating graphics in any painting app, such as Pixelmator, save it in psd-format, and you have in M5 access to each layer, to animate each indiviually

2) yes

your example is highly complex, but what I saw are some simple text-behaviors, M5 offers out of the box, and tons of animated (behaviours/keyframed) graphics...

For a beginner...? I'd say too complex... but, maybe you're better talented than me

3) the usual suspect, rippletraining.com, offering hundreds of free tuts at YT, and offering 'boxed' courses for indepth learning, $$$

Again, your example is a symphony of dozens of perfectly timed animation... to reenact that would cost me days, and I'm no Motion beginner ....

1 - MotionVFX.com has some of what you're looking for.  But you can also create those shapes/objects inside of Motion itself.

2 - More than enough.

3 - Start with freebies, then move on to Ripple Training or MacProVideo.com paid tutorials.  Here's some of the better freebies (mine included).

http://finalcutprox.guru/page1/page5/

https://www.macprovideo.com/hub/category/motion

Motion is fifty bucks. Buy it. You will not be sorry. It's a great little toy box.

BenB wrote:

 

1 - MotionVFX.com has some of what you're looking for.  But you can also create those shapes/objects inside of Motion itself.

 

I have MotionVFX and it's a great add on to do 3d objects/texts in Motion...

FYI, what I refer to as being inside of Motion will be the shapes and content and such in the Library pane.