If you ever struggle to focus on reading or writing, this method may help you get to work. Set a timer for 25 minutes and commit to working for that whole time period. Then take a break. There are lots of pomodoro apps to help you track your time.
Scrivener lets you break up your writing into different pieces so you can stop staring at a black Word document. It has many features, but I particularly like that you can use a split screen to view your writing as well as files you've added to Scrivener for your research.
Evernote bills itself as a tool for remembering everything. It's a great way to collect web docs, screenshots, PDF files and more. You can also do basic writing here. It has apps for all sorts of mobile devices, so you can do your writing anywhere.