I have psoriasis. Aany good home remedies to treat it?

Sure, lots. There are lots of excellent treatments for psoriasis, and almost all of them can be done at home. But all of the proven-effective ones require prescriptions. If by "home remedies" you are referring to non-prescription or "herbal" treatments, i'm afraid that, in 30 years of practice, I have yet to come across a single one that is safe and effective. Don't waste your money; see a dermatologist.