The Apple Pencil will NOT work with any iPads made before late 2015 and the later 2017, 9.7 inch screen iPad 5th generation.
Sorry.
You can certainly purchase another new or newer iPad, if you so choose, like the 2015 and 2017 iPad Pro models or later to use that Apple Pencil or you can go the much cheaper route and purchase a third party, smart Bluetooth stylus that IS compatible with your 1st gen iPad Air.
For a good, reliable, third party, smart Bluetooth stylus, look at the Adonit Pixel stylus by Adonit.
I use an Adonit Pixel stylus with my iPad and I think it works fantastic with all of the compatible apps!
It’s the ONLY third party, smart Bluetooth stylus that I can, honestly, recommend that actually works well with ANY
iPad model!
http://www.adonit.net/jot/pixel/
This smart, Bluetooth stylus works across a wide range of iDevices.
The Bluetooth connection is stable and its Bluetooth pressure sensing technology is very smooth, natural feeling and has consistent line drawing ability.
Plus, it's a quality made, aluminum stylus with two programmable buttons.
I have been using this stylus for over 3 years now, and itis really good on my iPad.
This stylus works wonderfully for me
The Adonit Pixel works with iPads all the way back to the 2012, 1st gen iPad Mini and iPad 4th generation!
Has ON/OFF/app shortcut buttons.
Has a nice fine, textured pen tip AND a nice rubber grip.
Magnetically charges, has an auto 15 minute shutdown feature ( to preserve battery life ), charges in a hour.
Has both a small USB charger that that plugs into any USB charging block OR you can purchase an optional charging dock.
I find it only lasts for anywhere between 9-12hours, or so, but, Adonit claims up to 24 hours of continuous use on a charge cycle.
Made of very high quality aluminum materials.
If you do not mind having to use a reduced set of compatible apps, the Adonit Pixel works with about a dozen of the major/populardrawing/sketching/painting apps (the Pixel/Pixel Pro works with, but currently not “officially” supported with Procreate, but it still works and works pretty well in Procreate ), andabout a half dozen of the popular note taking apps, a half
dozen writing apps and about a half dozen PDF style/compatible apps.
You WILL have to perform some pairing and setup parameters in each of the Adonit Pixel compatible apps.
You just DO NOT simply turn on Bluetooth on an iDevice and turn on the Adonit stylus and expect to start writing.
The Adonit Pixel/Pixel Pro stylus is NOT an Apple Pencil in this regard/respect.
You have to initially Bluetooth pair the Adonit Pixel, setup the hand/palm position and in many apps, set up
the stylus screen pressure sensitivity for each and every compatible app!
Once you have, initially, done all of this, all Adonit Pixel compatible apps will remember these settings for future
use!
Some Adonit Pixel users claimed their stylus doesn’t work, but it does work well IF you properly know how to set up
the Adonit Pixel.