Silly question no.1
I have an iPad Air 2
I am getting an iPhone 6s Plus.
Can I have two Apple IDs?
I would like to have two, one for the iPad and one for the iPhone but as my present Apple ID is my E-mail address, I suppose I would need to use a different E-mail address for my second ID.
If I stick to one ID, I'm concerned about iPad stuff getting onto my iPhone.
I intend having two separate iCloud IDs.
Thanks.
Over and out.

Yes you can. You can have as many Apple ids as you like.

Yes, you can have two IDs, but in my experience you are better not to. You will end up buying apps twice, and sharing content is harder.

I have at least 4 devices one one ID, and an iPhone and iPad are used by my wife with no problems sharing an ID. You can use iMessage etc. with few problems.

You can always add another ID later if it doesn't work for you, which is easier than the other way around.

Many thanks, kidspud and Stig.
I think, perhaps, I'll stick with one at first and see how it goes.

Well actually Apple have made it so much easier now with apps and sharing music/movies and some other content as you can just set up Family Sharing then both devices will have access to all content from from both AppleID's if you wish to do so.
The only downside to using the Family Sharing option rather than just the one AppleID on both devices is if a subscription to Apple Music is made as it costs a little more.
I'm pretty sure with a single AppleID option you can restrict what you want appearing on each device anyway.

You have control of what you have on each so no need to worry. And as other have said you would have to pay for apps twice if if you had two IDs and wanted them on both devices.

Warning : quite a few phishing emails doing the rounds at the moment saying your Apple ID has expired and then asks you for various details to reset. If you get such an email, delete it. If not sure, call Apple Support,.

Many thanks.
One ID sounds the more sensible.