I grew up reading Point Horror books and Harry Potter and random ones I stumbled across myself (I remember reading Dracula when I was about 12), but I never really had any grown ups giving me books they thought I'd like (aside from assigned reading for school, which mostly sucked) and I didn't have any friends to talk about books with or get book recommendations from.
Now, I'm older and I love books, and I have a nephew and he loves to read too. He's really the only one in my family that loves to read the way I love to read, so I give him books (and it's really cute, sometimes he tries to let me borrow his books too).
Basically, my point is this: You should encourage children to read, and if they already love reading then you should nurture that.
And, to go along with that point, here are some recommendations for younger readers (my nephew is 10, these are the books I've given him to read over the past year or so):
There are the obvious ones like Harry Potter and Diary of a Wimpy Kid (the latter being one he picked out himself and loves), of course. And I still maintain that Point Horror books are awesome.
A Series of Unfortunate Events by Lemony Snickett
2. The Lightning Thief by Rick Riordon
3. Matilda by Roald Dahl (but any of his books are good) - This is one of those books that 90's kids grew up reading, and it's one that can totally stand the test of time.
4. Peter Pan by J.M. Barrie
5. The Poison Boy by Fletcher Moss
6. Chris Priestly books - I'm not sure which of these to recommend, since I've not read them, but I gave my nephew a bunch of them and he seems to really enjoy them. If you have/know a kid who is into ghost/horror stories, maybe check out some of these for him/her.
7. The Gorgon in the Gully by Melina Marchetta
Skulduggery Pleasant by Derek Landy - This book is awesome (I read it a few years ago, so it's one of those ones that can appeal to older readers too). It's funny and it's fun and just...yeah. I really recommend this one.
9. Wonder by R.J. Palacio
10. Breadcrumbs by Anne Ursu
I've given him loads more, but those are the ones I remember.
Were you a reader when you were younger? When did you really start reading?
Did you have any adults (or friends/siblings) in your life that encouraged you to read?
Is there any books you'd recommend for younger readers, books that can spark a love of reading in someone young?
p.s. On a completely unrelated note, my reading funk seems to have gotten much worse. I must have more than 20 books that are started but unfinished, it feels like it's been ages since I've finished a book. I just can't seem to concentrate, but as soon as I snap out of this, expect some reviews up (hopefully soon).