5 Things: 4 Train Changes, 'From Portraits to Pinups' Symposium, Love Your Library Day, More

1. You need to use your brain. Head to the  for the . 11:00am–6:00pm, 200 Eastern Pkwy.

2. Your daughter or transgender son needs to learn self-defense. Today there's a free  for teen girls and transgender youth. Pre-registration is required - call (718) 788-1775 or email info@caeny.org. , 327 7th St, 12:30-2:30 p.m., ages 12-17, Free.

3. You need to get the kids out of the house. Head to the Brooklyn Botanic Garden for the first of its . There are workshops and hands-on activities that explore plant and animal life cycles. ,  1000 Washington Ave, 11 a.m. - 1 p.m., Free. Or see our .

4. You need to get to the library. Today is  at the Central Library with a buck-a-book sale, music by BPL's band "Lost in the Stacks," arts and crafts for kids, an author talk, and more. , beginning at 10 a.m., all ages, Free.

5. You need to know if your train is running. All weekend there is no 4 train south of Brooklyn Bridge. Instead take the 3 train or the special J shuttle see the MTA site for details. Other lines are running normally through Prospect Heights.