The South Main Art Trolley Tour will be held today from 6 p.m. to 9 p.m. in the South Main Arts District. Attendees can enjoy free trolley rides between the galleries and stores along South Main Street. Visit www.southmainmemphis.org for more information.

The Alliance for Nonprofit Excellence will host “Researching Grant Funding” today from 9 a.m. to 1 p.m. at the Alliance, 606 S. Mendenhall Road, Suite 108. The cost to attend is $65 for Alliance members, $55 for participants in the Program for Nonprofit Excellence and $150 for nonmembers. For more information or to register, contact April DeBerry at 684-6605 or adeberry@npexcellence.org.

The Memphis Potters’ Guild will host an opening reception for its Annual Spring Show & Sale today from 5 p.m. to 9 p.m. at the Memphis Botanic Garden, 750 Cherry Road. The show and sale will be held Saturday from 9 a.m. to 6 p.m. and Sunday from 11 a.m. to 5 p.m. For more information, call Agnes Stark at 458-2354 or the Memphis Botanic Garden at 636-4100.

The Memphis Music Foundation will hold the dedication and grand opening of the Memphis Music Resource Center (MMRC) today at 431 S. Main St. It will be open to the public that night from 7 p.m. to 9 p.m. The MMRC is a work and business development center dedicated to serving Memphis musicians and music industry entrepreneurs.

The South Main Association will host a “Sweep the Streets” event to help keep the South Main area clean and free of litter Saturday from 9 a.m. to 11 a.m. Those interested should meet at Bluff City Coffee, 505 S. Main St., with brooms, dustpans and work gloves. Water and snacks will be provided, and volunteers will receive discounts on all Bluff City coffee orders. For more information, call Joan Robinson at 399-8500.

The American Cancer Society will hold the Zodiac Ball 2008 Saturday at The Peabody at 149 Union Ave. The event, honoring Dr. Lee Schwartzberg, will remember “The Summer of Love,” with musical entertainment, silent and live auctions and dinner. For more information, auction donations or tickets, call the ACS at 278-2091.

The Center for Southern Folklore will host Blind Mississippi Morris and Brad Webb Saturday beginning at 9 p.m. at the Folklore Store, 123 S. Main St. at the Peabody Place Trolley Stop. Admission is $5. For more information, call Tim Curry at 525-3655.

The Dixon Gallery and Gardens will host Icelandic artist Steinunn Thorarinsdottir’s installation, Horizons, beginning Saturday and running through Aug. 31 at the Dixon, 4339 Park Ave. The exhibit consists of 10 cast-iron, life-size figures standing amid the gardens. For more information, call the Dixon at 761-5252.