Frustration

Im desperately trying to figure this blog thing out.  If I make my security settings where I have to add you (by email addresses) then it says you will eventually have to sign up for a google account to view the blog (after like 30 days or something crazy).  But if I leave it open for anyone...than ANYONE in THE WORLD can see my stuff.....ahhhhh.....WHAT TO DO!  HELP!!!!!!!!!!!!!!!!!!!!