Top right hand corner there's a box that says "Search..." You can select where you want to go search (All Content, Topics, Members etc). I believe you have to register/create an account. before the search function is visible.
Welcome to the boards! Sorry you have to be here but I hope you'll find answers to any questions you might have. There are a few of us who that still hang out just in case we can be of help and so much information in older posts that is still so relevant. Take care!