Like is it grammatically correct? I think I remember a teacher telling me something about that. Problem is, I can't remember how to restate it. Like for example "It's important to consider the kind of timeshare..."
Used in that particular context, it's not really wrong. In this sense, you mean the "type of" timeshare. It's a little informal, but not necessarily bad. However, I have students who occasionally say "kind of" as in "somewhat." In this sense, it's usually just bad writing because it's vague and painfully informal. It usually indicates that the writer isn't really sure of what they are writing (i.e., it's neither good nor bad, but "kind of" good or bad). Hope that answers your question.
New question, how about like "Some of us..." is there a better way to put that? It sounds decent enough, now that I see it on paper, but I was just wondering if there's a better way to put it.
with 'kind of' it's generally ok grammatically if it has an article in front of it: and not, if it doesn't: as for 'some of us' i'd have to see the context you're referring to, since those three words alone are perfectly grammatical and have their uses:
It's still ok grammatically, but it's informal which isn't usually the register you want for narration (fine in dialog, of course).