Over the years, I had fairly good success with writing grants. Give me the request for proposal, and I could articulate the idea, relate it to the purpose of the grant, and carefully follow the directions. Writing was not the problem.
Finding grant opportunities was the challenge, and I imagine it is a challenge for many others as well. That’s why I was glad to find a blog called Guide to Grants. I added a subscription to my Google Reader, and now every time an opportunity is posted, it comes directly to me.
Yes, there are other publications which search and summarize grant opportunities, but it you are looking for one more (especially one that is free) this is not a bad one.