There are some really good suggestions for you already so my opinion is just that.... my opinion.
I have been a sewer for many years but like you, I didn't have anyone to show me how to quilt and I really wanted to do it. I knew how to sew but learned so much from watching TV shows about quilting. I don't think the Simply Quilts show with Alex Anderson is on the air anymore (and I'm really showing my age) but I loved that show. I got so many great ideas.... and did several quilts I saw there. Now I can watch Fons and Porter's Love of Quilting and Nancy Zieman's Sewing with Nancy (some shows are about quilting, some are sewing). Now I tape them and watch them when I get the chance instead of getting up super early to catch the show on a Saturday morning. Check your TV guide to see what's available in your area.
I know there are lots of videos on line as well. I'm sure those would be good but I haven't watched many on those myself.... again, showing my age.
Good luck..... pick something you love and go for it. And, we're all here to answer questions or take you under our wings to get you to where you want to be in your quilting. It's a fantastic ride!!