Hudl 2 - expanding memory with SD Card

[Dino D]

Need some help on how to properly extend the memory on a Hudle 2.
I have an SD Card installed but it only lets some things go across and the main memory is still to full.
How can I move everything across?
I've seen some apps and references to 'rooting' but would like some clarity, hopefully a step by step guide is out there or something?

[Dino D]

Why is 'Kit Kat' a problem?
Can I update to 'Mars bars' or something that allows me to use it properly?

[Dino D]

Can the hudl 2 be upgraged to Lollipop or do I have to just make so with Lit Kat and root it?

I'm pretty disappointed that such functionality is blocked. Smells a bit like Apple BS. I wrongly assumed before buying that being Android you aren't restricted by Applesque BS and you can just get on and use the device and expand the memory as needed. Really don't see the point in making basic things like expanding the memory so hard.