Enjoy the shorter work week with these events!

This week: Joint ventures 101 with Chris McDemus, a reception for the fifth annual Random Hacks of Kindness (and the hackathon itself!) and a new meetup about optimizing mobile apps.

Joint ventures can tear you apart (or help you grow). Learn from the best.: Chris McDemus, managing partner at law firm Baer Crossey, will give you the lowdown on the benefits and pitfalls of joint ventures. Wednesday, 6:00 p.m. – 8:00 p.m. Venturef0rth, 417 N. 8th St. Callowhill. RSVP. Free.

Random Hacks of Kindness Reception: Brainstorm for the fifth annual Random Hacks of Kindness that kicks off Saturday at this reception hosted by the City of Philadelphia and Chief Data Officer Mark HeaddRSVP for the weekend-long hackathon hereFriday, 6:00 p.m. – 8:00 p.m. City Hall Conversation Hall Broad and Market Streets, NE entrance, Center City. RSVP. Free.

Optimizing Mobile Apps PHL – Open Mic Night: In the group’s inaugural meetup, talk optimizing mobile apps at this open mic  night. Wednesday, 6:00 p.m. – 7:30 p.m. Artisan Mobile. 309 Cherry Street. Old City. RSVP. Free.