STOCKTON — There will be no shortage of resources, food and entertainment this weekend during the two-day Stockton Black Expo Fair.The event, which has been held for more than 15 years, is part celebration and part resource fair, said Rick Warren, the event’s organizer and founder. This year’s theme is “It’s a Family Affair.”Stockton Black Expo will be held at San Joaquin Delta College from 11 a.m.-6 p.m.