Before travelling to any other country it is very important that you have some important documents with you. Passport, visa and immunisation are the most common requirements for travelling to different countries. Since processing of these time can take some time so it is advisable to apply for these as early as possible to avoid end time hassles. You should also check with immunisation guidelines before you travel.
To get the latest travel advice for your desired destination you can check on the Foreign and Commonwealth website which is an official website that offers the guidance on everything from health to immunisation and from passport to visa requirements.