General information about counselling and psychotherapy
Reliable sources if you have questions about specific modalities in counselling and psychotherapy: The professional body BACP has an extensive list of theoretical approaches in counselling and psychotherapy
The NHS Choices provides accurate and detailed descriptions of counselling and psychotherapy and is another impartial source of information.
Parenting MindEd provides pratical knowledge through brief online learning sessions to help adults identify mental health problems in children or young people and to take action to address the issues.
'Positive Parenting' from NSPCC is a concise, easy-to-follow 16-page guide for busy parents.
For a good library resources on parenting, I found Parenting UK to be quite helpful.