Grow Pittsburgh is offering a whole raft of workshops this year, including seed-starting, fruit tree pruning, building raised beds, soil testing and soil building, school gardens, container gardening, edible perennials, pest and disease ID, preserving food, and season extension.
Times and locations vary. Each workshop is only $5 (free for GP members!), but registration is required; you can sign up online. Information on each workshop is here, and if you have more questions contact Jake by email or phone (412-362-4769 x102).