Reference management software is an important tool for any researcher to have in his or her armoury (it is also known as citation management software). There are many platforms available, some of which are free. You are more than likely to adopt the one in which your University or research establishment is affiliated with because of the licensing costs. You should be aware that some platforms may be portable, i.e., if you move institutions you can take it with you even if your new institution does not have a licence for your preferred choice. If this is not the case you will have the option to export your database, so you won’t lose all your work! If you are a PhD student I recommend that you do this after you submit your thesis, so that you have it as a backup.