What is this Plant?
I have no idea what this is or how best to care for it.
Your plant is a dracaena marginata. It looks like it is in beautiful condition. The main thing to be careful of is not to over- water. Over-watering causes root-rot and is the main reason a dracaena marginata dies. Water well and don’t water again until the top 50% of the soil is dry. In low light it could take up to three weeks for the soil to dry out. Brown tips on the leaves indicate over-watering or too much fluoride or salt in the water. Never use water that has passed through a softener, too salty. If your household water has a lot of chemicals, allow it to sit out overnight before using it or use distilled water. Numerous yellow leaves means a Dracaena marginata needs more water.
You can read all my care tips in the Popular Houseplant section of the website.