Point them to helpful resources. I have read a bunch of books, articles, and blog posts that have been very helpful to me. Many of them were recommended to me by friends who knew what I was trying to accomplish with my blog or business. That direct message, email, or tag on Facebook that points your friend to books, people, software, hardware, classes, and other opportunities to learn are often more valuable to them than the 99 cents that they are asking for the ebook.
When my friends see an article that I should read or someone that I should feature on my blog, it makes me feel so good because I know that they are looking out for me and my business. Entrepreneurs are always looking for ways to improve their products and services, reach more people, and be more efficient. If you can help them do that, they will love you for it.