SFist Jenna has your low-cost Friday and weekend covered!

Whether you're expecting a tax refund or if you had to cough up a pocket-full of dough to the IRS, we've compiled a list of things to do in the city on a budget, all for the cost of a movie – or less!

Tonight: Jeffrey Brown at GRSF. Eager to get an early-bird preview of the Alternate Press Expo? Head over to 618 Shrader, where Giant Robot and Chronicle Books present a book-signing with Jeffrey Brown, who emerged on the comic scene in 2003 with his self-published Clumsy. With a style more indie rock, and DIY zine than polished comic, Brown's latest work, Cat Getting Out of a Bag, dissects the tenuous relationship between humans and cats. Free, 6:30-8:30 at Giant Robot SF.

Comedy Central: Not expecting a tax refund this year? Head over to your favorite neighborhood sidewalk café, Dolores Park Café for a night of (almost) free comedy. With a killer line-up of ten local Bay Area comedians, have your fun for less than the cost of a movie at the third annual Café con Comedy. 7:30pm, Dolores Park Café,
501 Dolores @ 18th, SF.

Earth Day and indie artists on Sunday and Saturday respectively, after the jump. Picture of the flyer for Jeffrey Brown's event tonight.

Saturday, April 21

The Indie: Continue to celebrate alternative press at the opening reception for Gallery 1988, with a smattering of local, independent artists at Gallery 1988, 1173 Sutter, SF.

Sunday, April 22. Earth Day in GG Park. Celebrate Earth Day in Golden Gate Park for the cost of a brown bag and getting your booty to the park. Performances by Willie Nelson, Stephen and Damien "Jr Gong" Marley, Bob Weir, Greyboy All-Stars and more! Head over to Speedway Meadow, and kick off your shoes and enjoy the shows. 25th and Fulton, Golden Gate Park, SF. Thanks, Green Apple Music Festival!