Dear Miss Snark,
I was choking in the sea of confusion and darkness as a new writer trying to break my neck in to the literary world, and suddenly I saw your blog site. God bless, it held me up from the water for a good few minutes and I was able to catch my breadth - thanks for so many insightful answers to questions from my fellow chokers.
I queried a few agents of my genre and also found out that they'll be at a writers conference shortly. Should I follow up with them at the conference by booking appointments with them? Does face to face impression count or I should sit here quietly until my query piques their interest?
You can certainly make appointments with them. Don't expect them to have read or remembered your query. Treat it as the first chance to talk to them.
There are a lot of posts in the Snarkives about how to have a successful conference meetings with agents.
The first rule is to remember agents, despite overwhelming evidence to the contrary, are human beings. Just smile, be nice, don't panic, and start off with a question like "how many agents does it take to change a lightbulb"*** and you'll be fine.
***one, but you have to provide the bulb or we'll just leave you in the dark