iCloud and other questions

Hello guys!

I am struggling with some questions I don't get really answers.. So I hope you people can help me!

I live in the netherlands so keep that in mind.

1) iCloud is very interesting, what are the european prices for the storage?
2) i work with an iPad 2, iPhone4 and a windows laptop. I use my iPhone a lot, my iPad2 for school, writing small articles when I got college, and I work with my laptop when iIhave to make big projects or have to type that much. A MacBook is coming.. Is iCloud the solution for me? Is it compatible with windows or a normal internet browser?

3) I got an iPhone 4 and a iPad 2, both they have 4.3.5 version (I know, stupid as I was I download the latestversion). Can I jailbreak them? And if so, which website is the most relaeble to download a jailbreak?
4) What means tethered and unthetered? And what is the problem that you need to restart it via RedsnOw or other jailbreaks?



I know most of these questions are well known by you guys, but I can't get the answers I would like to hear, so that is thereason to ask the professionals! ;)

Thank you guys!

Jeroen

Could someone help me with this questions?

Thanks!