Roy,
Sorry to hear about your head injury. You've come to the right place - this forum has a lot of very helpful people and information. Others will have lots to add, but here are a few basic pieces of advice:
- Avoid hitting or jarring your head a second time (try to avoid significant impacts to the body as well)
- Physical and mental rest is key (do your best to avoid exertion or stimulation that makes your symptoms worse - this will be a trial-and-error process)
- Hard as it is, try to stay patient and optimistic - recovery can take days, weeks or months, but most people do improve substantially over time - the brain often makes a good recovery if you give it a chance
- Develop and stick to a good nutritional regime (which, in addition to good food, may include supplements like omega-3 fish/algal oil, multivitamin, vitamin D3 and/or B-50)
- Keep stress to a minimum (again, easier said than done, but you can develop strategies to help with this)
...
Finally, you might take a look at this thread ("Things you wish you'd known when you first got PCS") when you're feeling up to it:
http://neurotalk.psychcentral.com/thread140214.html