If you have arthritis it is very important for you to look after your joints, to avoid sprains and further injury, through applying joint protection, and to maintain range of motion and strength though daily exercises.
Here are a few useful links:
Arthritis Research UK has a lot of useful information about Arthritis in general and it is worthwhile visiting their website.
Another important aspect of managing Arthritis is to pace yourself and manage your time well.
Here is an e-book about time managment you might find helpful: