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GERMINATION AND GROWING ADVICE (but please seek additional resources)
These are challenging plants to grow, so do not take the following as guarantees to success, and do additional research on how to germinate the seed and how to grow it once germinated. My technique (but look at other's methods to get a good grasp of the process) is to germinate on part long fibered sphagnum and part perlite, with an approximately 1 cm layer of fine peat moss on top so the seeds have a flat even surface to start on. You may sterilize the soil beforehand to prevent growth of algae and foreign mosses, but be sure the soil is cool before placing the seeds on it. Once the pot is ready with the soil, I place the seeds on the surface, then place the pot in a tray and fill the tray with water almost up to the soil level, so the soil is waterlogged. I then put a humidity cover over the pot until the seedlings are well established. Germination may take a week or two.
Drosera Regia plants appreciate heavy feeding, full direct sun, and cool evening temperatures. Its leaves can reach almost 30 inches in length in the right conditions. I have found it best to not fertilize if the plants are catching plenty of bugs. If it is indoors and not feeding itself, feed it yourself with, for example, dried bloodworms (typically sold as fish food), or use liquid fertilizer on the leaves and not in the soil. Over fertilizing, or feeding them when they're less than a few inches tall, can kill these plants. Once again, do some research and see what works for other growers too.