I had to google-fu, but found it:
https://crackberry.com/how-use-word-...-blackberry-10
As for lack of apps - I dont use them all, but sometimes that one particual app might come in handy and BB OS might not be able to handle it either by not working properly or being super slow(Waze, for example, was super slow on my former Q5).
BTW, little bit of off topic - did you buy some screen protector/cases for it and if so, where? I see Latvian stores got nothing but one cheap tempered glass screen protector, but skins/wallets are either absent or pricey, so I ordered from China, just in case I do decide to get me Q10.
Oh and hows your battery life? How much do you use it? Im not much of mobile content user so it should be somewhere between dumb and smart phone for me in terms of usage frequency. I remember that Q5 had quite a promising battery life unless I turned on hub with all accounts connected to it.