You may not need a subscription until you've really got stuck into your research, and by then you may have a clearer idea of which family history website is best for you.
The first place to look is free genealogy websites such as FreeBMD (and its sister sites FreeREG and FreeCEN) and FamilySearch, which have a great range of records available for free. You may not need a subscription until you've really got stuck into your research, and by then you may have a clearer idea of which family history website is best for you.