Newsletters are a great source of information. I use web pro news because i know they are reliable. They keep me informed on many things such as search engines changing their policies, business news, latest SEO techniques plus lots more, through just one e-mail everyday.
Blogs started as a way for people to publish their personal thoughts for everyone to read, today they can be very valuable and useful business resources. Reading the blogs of leading people within your market or industry is helpful to keep you up-to-date on what's going on. Just sign up to their RSS feeds and anything new is easy to find, you don't have to spend valuable time that you could be using to develop your home business on searching for news and updates. These are my favourite three:
Michael Cheney - Cheney is the leading internet marketer in the UK. He earns 6 figure incomes month after month and is an expert in using googles advertising services.

RJ - Also known as The Rich Jerk. He has a unique, obnoxious and arrogent style which may not appeal to everyone, personally i think it's great. His work is not just informative, it's also entertaining. One of the worlds leading internet marketers.

Dave Chaffey - He has a range of useful books and guides and is another of the worlds leading e-marketers with over 10 years of experience. His blogs are updated regularly with tons of useful information.