Daniel Bullen is a Qualified ICT and Computer Science teacher and a Private Tutor of the same subjects. He has a 2:1 Honours degree in Information and Communication Technology (ICT). In addition, he has a PGCE Secondary in IT and Computing, which is a teacher training qualification. He has 4 years of experience with online tutoring ICT and Computer Science up to and including A Level. He has occasionally tutored undergraduate level Computer Science. In addition, he has 5 years of teaching experience in schools. His favourite topics are computer systems, operating systems, programming and quantum computing.