Link Building - Easy?

I want to build major links for this blog but not quite sure where to start.

Should I leave comments on the blogs that I want to link to or should I be emailing the bloggers to ask to link to them?

I have found some great blogs out there and think that my blog may help them so would really like to start swapping links. Ideas??

I feel that for this blog to take off this would be the main consideration.

Would bloggers be willing to link to just about anyone who had a half descent blog?

I feel that my blog is not great but hopefully with a bit of time, patience and know how then I could be up there very soon.

If I could get just 10 links by the end of this week then I would be most appreciative. This would, as most of you know, help to put this blog on the road to greatness!!!

I am also looking at starting a new blog and am currently thinking on what theme or niche I could blog about.
There seems to be a lot of blogs about celebrities in which I am quite interested, but would not think that my information would be as current a some. Would this matter all to much?

I am also thinking about something to do with the hospitality industry in which I am quite knowledgeable.

Would I be able to get linked easily in these fields?

Your help would be most welcomed.