It will also allow you to stay in the country to appeal if you are refused entry. Many institutions will provide accommodation for international students for the first year of a course or help with finding private accommodation. It is very important to ask your institution about accommodation as soon as possible as it gets booked-up very quickly. It is very important that you can speak, write and understand English well. Most institutions will not accept international students onto a course without evidence of fluency in English.
Some institutions run English courses prior to academic courses.
Unlike some countries British institutions are not graded in order of merit, you need to choose a course and institution that meets your needs. From here you will arrive at a short list of institutions and in many cases you may want to apply to more than one institution. Once you have been accepted onto a course there are many practical arrangements you will have to make. To gain entry clearance you have to show that you have sufficient funds without working. But it is possible to apply for permission to work once in the UK, provided your passport has a 'restriction' on taking employment and not a 'prohibition' on taking employment.