Who is my spirit guide? What is his/her name? Can I use them to channel, to help other people? How can I successfully use my guide to help me with intuition and receiving messages?
Your spirit guide is where you are when you live in another place. So you hope to contact this person.
We call our guides what we like. I am Hethball for that name appealed to Joey and I really like it. Some guides use these names with several people and then have other names for groups of others with other meanings.
So call your guide Henry or Adam for he would like these names.
As for channeling clearly, this comes with practice.