An easy and thorough personality test is the 16 Personalities test. It is free, available online and takes about 12 minutes to complete. It gives thorough analyses of each personality type and respective strengths and weaknesses of each type.
Built around the same basic principles, studies and conclusions as the popular Meyers-Briggs test, the 16 Personalities test walks through a series of questions with answers ranked on a scale from "strongly agree" to "strongly disagree." Based on answers, an individual is placed into one of 16 personality categories.
There are five personality indicators divided into two contrasting sides. A person may be either introverted (I) or extroverted (E), intuitive (N) or observant (S), thinking (T) or feeling (F), judging (J) or prospecting (P) and assertive (A) or turbulent (T). Short summaries of each personality type and a chart mapping the highlights are available.
Based on a combination of personality traits, 16 Personalities offers a detailed analysis of each personality, complete with strengths and weaknesses. In addition, the exhaustive analyses include ways of approaching and motivating each personality type, as well as suggestions on things to avoid in interactions. Analyses also include tips on personal growth for each personality type. Furthermore, the site provides each personality type with specific career suggestions. Likewise, the analyses include careers in which the person might not be as gifted.