To expand on what has already been said:
I have little knowledge about Gnosticism but I was wondering, would this be considered an abrahamic religion?
Yes, and no. It was born out of Abrahamic religions so it can be considered one from a historical perspective, but it disagrees with a lot of what is considered typical of an Abrahamic religion and thus might not be considered to be one from a philosophical/theological perspective.
I hear they look at Christ but do they worship Jesus or just show respect for him?
Most of the classical Gnostic groups viewed and revered him as a divine figure. Of the gnostic groups that survived through the middle ages the Druze do this and while the Mandaeans do not. Some modern revival Gnostics do, some don't.
Is there a difference between a Gnostic and a Gnostic Christian? If so, what might it be?
Yes. Although "Gnostic" was a term invented to describe a certain group of Christians and that group has been the most influential overall not all of what is usually defined as Gnostic is Christian. For example the Mandaeans mentioned above actively reject Jesus. The difference is very simple: if they revere Jesus in any way they are Gnostic Christians (or syncretic with Christian elements), if they don't they are not.
what are their views on the afterlife, such as Heaven/reincarnation.
The classical Gnostics had a concept of possibly being reunited with the true god after death and some (like the Cathars) believed that you would be reincarnated if you failed this. As for the modern revival Gnostics: some believe in these things, some don't.
Do they have a place of worship like Gnostic temples or churches or do they worship at home?
The classical Gnostics did. The Druze and Mandaeans do. Most modern revival Gnostics don't, but the Ecclesia Gnostica is an exception (at-least in some parts of the world).
Do they worship God or just respect him?
The Druze and Mandaeans do worship God. With the classical types it is a bit harder to know since the emphasis in their text and the commentary on them tends to focus on Gnosis (internal knowledge) rather than worship. I tend to assume they did, if not not the way modern Orthodox/Catholic/Reformation Christianity do. Among the modern revivalists it varies widely.
What are their views on magic? Do they practice it?
When it comes to the classical Gnostic I'm unsure. Some probably did practice it since some other early Christians did, but it was not a central part of the religions of either. As for the modern ones; again, some do, some don't.