Here are a few items can be done easily
Changing the interior dome light bulbs
Flushing the Automatic Transmission Fluid step by step
Replacing the front break pad.
Replacing the rear break pad
Flush the break fluid common tutorial
Another brake fluid flush.
Fixing the windowshield a very clear video by a Carolinian guy.
Fundamental fact about this disease: Plague Psoriasis
A common knowledge-base portal via Wikipedia provides just enough knowledge.
I like webmd better as it looks closer to scientific oriented write up.
The Mayo Clinic would provide much thorough and unbiased explanation for the disease.
From Mayo Clinic, Psoriasis triggers
Psoriasis typically starts or worsens because of a trigger that you may be able to identify and avoid. Factors that may trigger psoriasis include:
Infections, such as strep throat or skin infections
Injury to the skin, such as a cut or scrape, a bug bite, or a severe sunburn
Heavy alcohol consumption
Vitamin D deficiency
Certain medications — including lithium, which is prescribed for bipolar disorder, high blood pressure medications such as beta blockers, antimalarial drugs, and iodides
All about autoimmune related issues
Wikipedia on TNF-alpha, a cancer related protein: Tumor Necrosis Factor alpha