Overwhelmed is pretty common when you find out.
Many of us found out when we first got the disease that hot showers and warmth alleviated some of the more acute symptoms. Stretching, physical therapy specific to AS and keeping your body warm during work days is central to improving circulation to the areas which are compromised.
AS "works" through the migration of tumor necrosis factor (a cytokine) into our tissues in larger amounts than is normal for most people. That overabundant amount causes inflammation and leads to discomfort and pain. Enbrel, Remicade, Humira and other medications bind (attach) to TNF and prevent it's migration into our tissues. When it works it works well. Some people find that other medications taken orally help specifically non steroidal anti inflammatory like ibuprofen, voltaren and alive help as well though these medications have side effects on the lining of the stomach so if you take these take a medication like pepcid, prilosec etc and discuss with your doctor prior to using them. Arthritis strength Tylenol helps too.
For hands and joints Voltaren gel, Aspercreme with Lidocaine and Biofreeze are good choices. I put them on and cover my hands with a sock or my neck with a ski silk. I find that to my surprise Biofreeze works over a longer period of time and the pain relief is best with Voltaren gel.
A positive attitude goes far. Keep moving, and if Enbrel does not help, try Remicade or Humira per your doctor's review.
Don't be troubled. Every human being has challenges, Many people don't have solutions and/or medications. Ours does. =)