Weekend Rails in Park Slope, Jan. 26 to 27

You can expect only a few service changes that will affect your trip into, around, and out of Park Slope this weekend. However, still make sure you get the scoop on the planned service changes before you leave the house Saturday morning:

• The F and G train will skip Smith-9th St. all times until April 2013.
• Coney Island-bound N trains run via the D from 36th St. to Stillwell Ave.
• Q train service is extended to Ditmars Blvd.
• Crown Heights/New Lots Ave-bound 4 trains run local from 125th St. to 14th St.-Union Sq.