If like me you are interested in the History of the Church then you might be interested in the Christian History Institute website that has copies of its Christian History magazine. Many copies of these are now available on the website for free and cover a wide range of topics. Look at the back issues section to get an up to date list. These magazines can either be read online or downloaded as a PDF to read offline – or if you really wanted, to print out. There are magazines devoted to individuals such as the life of Billy Graham, or topics like the Holy Land.
If you have a browse I am sure there are some interesting things to find, so why not try it out.