Before you choose a test to pass, you need to decide on their level of English, because each test and, accordingly, the certificate is designed for a certain level of knowledge and confirms a certain level of knowledge. It should be noted that various publications and textbooks, as well as educational institutions and similar organizations differently crushed scale of English, but one of the most common is the following: Beginner (0 knowledge, i.e. novice) - Elementary (elementary, basic knowledge about the grammar) - Pre-intermediate (the so-called "pre-average" level) Intermediate (secondary) - Upper-intermediate (the so-called "pre-advanced") Advanced (advanced). To accurately determine your level of knowledge, it is desirable to place a short, 20-minute tests online and pass full test in one of the educational institutions or courses in English. Of course, you can find the corresponding test on the Internet, but then to use only foreign sources.
After passing the test and determine your level of proficiency, you need to select the appropriate certificate. The most popular system of determining the language proficiency of Cambridge, which monitors the implementation and results of such certificates, such as YLE (certificate for children ages 7-12 years old), KET (Key English Test - the first step, basic English) PET (Preliminary English Test - intermediate level knowledge of language), FCE (First Certificate in English - this test covers several levels, but in order to pass (score at least 60%), you need to have at least lower-intermediate level), CAE (Certificate in Advanced English - advanced English) CPE (Certificate of Proficiency in English - if you pass this test, then confirm that you know English at the level of the average educated Englishman).
After you match your level of proficiency and the or other certificate confirming this level is to move to training. Training must be based solely on didactic test materials and "test" materials of the relevant test. The more difficult the exam, the longer the preparation for it.
It is worth noting that people rarely spend time in exams such as KET or PET. These exams confirm the basic or intermediate knowledge of English and, therefore, rarely requested by employers or higher education institutions. Moreover, preparation for these exams, the student often notices that may try to take the exam the next step is FCE, which is actually a very popular and valuable.
There is also involved in the Cambridge IELTS (International English Language Testing System), which is issued regardless of whether you've received a certain number of points, as is done upon delivery of KET, PET, FCE, CAE, CPE. That is, the IELTS covers a scale from 0.0 (do not know) to 9.0 (speak English like native). This certificate confirms knowledge of British English and is highly regarded in international organizations, universities, when applying for a job and for immigration to Canada, UK, New Zealand and Australia).