One of the best resources I have found and they are all free, is from Simon Fraser University. You can download books on depression, tools for anxiety and other problems. The link is
The best and cheapest link to use is a telephone app called Buddhify. It opens into a wheel and provides guided meditation for whatever you are doing at that time. There are guided meditations for pain, anger, eating, walking etc.
There is another telephone app which is a Jesuit link from Loyola called 3 minute retreat. This is of tremendous value