Some magazines are published weekly, some monthly. You can find English-language magazines in many large cities around the world. If you cannot find the magazine you want in your town, you may be able to order it for delivery. Many magazines have pictures which can help your understanding. You will need an intermediate level for most magazines, but a pre-intermediate level may be ok for some magazines.
Some books are easier to read than others.
It often depends on the author. Agatha Christie, for example, wrote in an easier style and with simpler vocabulary than Stephen King. You can buy books in specialised English- language bookshops in large cities around the world. You may also be able to find some English-language books in libraries. And if you have a British Council in your city, you can borrow many English-language books from their library.