I wasn't expecting everyone to make such long, informative posts! I feel almost bad that you've spent so much time replying to my posts.
@nohika: Thank you, yeah, I just didn't understand the terminology you were using.
I'd had a quick browse of the yomichan thread before reading your post but didn't really get it. Your post has summed it up nicely
I didn't realise you were referring to the JLPT when you said 'N'. I was thinking equations, haha.
But yes, thanks, that helps a lot now that I understand!
@kainzero: Your point is true about wherever you rip sentences from, they will be boring in isolation. I just worry that I will get burnt out easily if the sentences are too difficult to start with. Thank you.
@prink: Woah, that source is really, really useful. I didn't realise there was a site like that. Bookmarked! Thanks!
@rich_f: Thanks once again, I'll have a look at kore (too many options!

... better than not enough, though)
@caivana: Cheers, that's very helpful!