Is there a sequence to using them?
A beginner's confusion: What is the difference between an issue-tree and a framework? Can they be used interchangeably?
In consulting these terms are often use interchangebly. In case prep a framework is a general structure (e.g. profit framework consists of revenue and costs, costs is split in fixed and variable..). Where a issue true is often a customized framework for a specific problem/case.
In the beginning of your case prep some people start with general frameworks, however I always recommend to use your business logic to come up with a specific issue tree for each case.
Related BootCamp article(s)
The case study is the most important element of the case interview, which you'll have to nail in order to get into strategic consulting. Here you can learn the specific skills and concepts necessary to solve them.
Focusing on The Core: Mock Interviews
It is to practice as many cases as possible - both as interviewee and as interviewee. Here are a couple of guidelines to help you get started