How do I unclog a drain without a plumber?

Start by removing any visible debris from the drain opening. Then try pouring boiling water down the drain in two or three stages, letting it work between pours. If that doesn't work, use the baking soda and vinegar method: pour half a cup of baking soda down the drain, followed by half a cup of white vinegar, cover it, wait 15 minutes, then flush with hot water. For tougher clogs, use a plunger with a good seal over the drain and plunge vigorously. A drain snake or zip-it tool works well for hair clogs in bathroom drains. Avoid chemical drain cleaners regularly as they can damage pipes over time.