Some allow you to work through a self-help course online with support from a therapist. Others offer live therapy with a therapist via instant messaging. You don’t need much experience with computers or technology to use them.
You can also join an anonymous online community where you can meet and talk with other people who have similar mental health problems to you. e.g. registered charity Mind‘s Side by Side is a UK supportive online community where you can feel at home talking about your mental health and connect with others who understand what you are going through.