I have found a couple of really good resources on Youtube. The first one that I found is a Youtube channel called Therapy in a Nutshell. It's run by a real therapist, Emma McAdam. She teaches methods for dealing with anxiety and depression, as well as relationship skills in a series of videos. It is fantastic. Very helpful for anxiety. Here's a link. Therapy in a Nutshell - YouTube
The second one is about childhood PTSD and it's called The Crappy Childhood Fairy. It's run by Anna Runkle and she is not a therapist, but just a person who experienced some trauma in childhood and has learned to heal from it. Her link is here. Crappy Childhood Fairy - YouTube.
If you had any trauma in childhood or if you have any anxiety, these are definitely worth watching. I recommend them whole-heartedly.