Hi SnowyOwl,
Welcome to the HP Support Forums! :) I see you are interested in printing certain pages as opposed to the whole document or webpage, and printing in black ink only. I notice you are using an iPad 3, are you using the AirPrint driver or the ePrint mobile application? I ask because when using the AirPrint driver you are limited in the printing preference options.
If you are using Apple's AirPrint driver you do not have the option to print in black and white. If you would like to use the ePrint mobile application, open the desired document you would like to print in black and white, and follow the instructions listed here: Printing from an Apple Mobile Device
Once the ePrint mobile application is installed you will see all options available to you, see image below:
As for the selective printing this is currently not a feature available. If you are printing a pdf document you do have the option to select the page range, but when printing from a web page this is not a feature.
Please keep this for future refernce: HP ePrint Mobile App FAQs
I hope this helps, keep checking the ePrint Help Center for news, updates and recommendations!
Thank you,