This is a decent overview and dictionary of some analysis techniques. They are well explained and nicely presented, but as it is primarily a dictionary/overview, you really need to understand the basic concepts first. Maybe even know some of the concepts at depth, to really appreciate the book and be able to use it effectively.

All in all, a nice book, but don't buy it expecting to learn some of the concepts from it, it only presents them and you still have to find more details elsewhere on how to really use them.