The Cubs today announced an advance ticket sale which will include nine games; they've done similar things in the past (last year it was 13 games), in an attempt to fill some of the seats shown above before the main single-game ticket sale happens on March 9.
For the general public, this sale begins Friday, Jan. 20 at 10 a.m. CT, but there are at least two presales, one for season ticket holders and one for Wrigleyville neighbors. The STH presale begins at 10 a.m. Wednesday, Jan. 18 and the neighbors presale, Wednesday, Jan. 18 at noon.
The list of games is somewhat better than in some previous years. You'll note that you can get tickets to Red Sox, White Sox and Cardinals weekend games as your first two picks, and then you have to pick "lesser" games to fill out the plan. There are different choices for the "lesser" games depending on whether you want bleachers or "bowl" (what we used to call "the grandstand") seats.
It's a bit complicated to explain in a post, so go to this page at cubs.com where it lists the games you can pick from for each choice of the nine games.