Total newby

I'm a total newby to Drupal, I've managed to get Drupal 7 installed, and I've got some content in place. I'd really like to add a wysiwyg editor to ease text entry sometimes. I'm really having problems getting a wysiwyg editor installed. I want to be able to go to plain text too, in order to have greater control.

I live in the Mansfield area of Nottinghamshire, I'm willing to travel in order to have some guru give me a few pointers and maybe show me where I'm going wrong.

Please help.....