429497 theme in wordpress help

I need help to set up the theme in the wordpress I have recently bought from Forest Theme. I have downloaded the theme and installed it too but I get some errors. I know wordpress but not very confident to handle it and hence need professional help. I need to set up categories, enter title tags, meta tags, Headings etc. The theme I have bought is this [login to view URL] Little bit of tutorials related to them would also help.