Finally, really good advice on how to stop killing your houseplants

• Yellowed, drooping or dried leaves are your plant's way of screaming for attention.
• Plants tend to bend toward the light source, so that's your cue to move them closer and rotate their containers.
• Overdry soil means not enough watering. 
• Soggy soil can't escape through the container's drainage holes means too much watering.

The easiest way to pick up on your houseplants’ cues is to enjoy them.

• Watering. Never wait for your plants to wilt before you water them. Check your soil first. If it crumbles apart, that's good. If it remains a soggy glob, you're overwatering.
• Potting. You'll need to periodically repot your plant so that it can grow bigger and avoid issues like root rot. If your plant is wilting, it might need more space for its roots. 
• Positioning and rotating. Put your most sun-loving plants near windows and plants that prefer less sunlight away from the windows. Ensure to rotate them to prevent overgrowth on one side.

Prune yellowed and dried leaves and wipe your leaves down regularly as dust creates a filter between the sunlight and the leaf tissue.

Rotate your plants and check their soil to notice any unwelcome bugs before a full0on invasion hits.