Most of the stuff you'll find on the web is pretty old. In most industries it's not really a big issue-- waste management and industrial pump manufacturers don't change that quickly. But obviously in semis it matters more.
If you know anyone who works at a hedge fund or investment bank, you can ask them to grab some primers for you. All the big banks produce them for the major industries they cover. But they usually watermark every page of the report with the name of the client to discourage people from sharing more widely.
