Yes, there is a of advice on this website & forum, in fact so much that you might feel overwhelmed; and if you've just been diagnosed you'll probably be feeling a bit shocked & worried as well
But do your best to calm down and accept that it will take a while to understand all the information
Take some comfort from the fact that you are not alone, as we have all been in that situation, and that you can live well with diabetes, though it will usually require some changes, especially to your diet
Have a look at -
the Sections 'Basics' and 'Living with diabetes' 0n the Home Page
Learning Zone, the red tab at the top of this page
Previous Threads, especially in the Newcomers & Food sections of this forum, as any questions will probably have been asked before
And speaking of questions, ask away! Nothing on here is considered too silly or basic