An important technique for adding momentum to a slow plot: http://jodyhedlund.blogspot.com/2013/07/an-important-technique-for-adding.html
For help with writing a synopsis of your book - try this 6 sentence synopsis method.
A good list of activities your characters can do while talking or thinking. Sometimes it's hard to come up with the perfect action, so this list will definitely get you started.
Villainy 101: Villains Are People Too: How to Avoid Writing a Protagonist-Centric Villain
10 Techniques to Unleash Your Creativity.
Character alignment chart. Great for planning characters. The fact that it's Sherlock is just... a fortunate occurrence.
One take on personalities - which one best describes your character?
A chart about realistic travel. I love that.
Take your characters to the edge. Throw them into events where they could break or fail. What's the worst that could happen to your character?