I understand magick just fine, thank you.
There are two types of real vampires; manifest and non-manifest. Non-manifest ones are spiritual parasites, and they range from non-conscious instinctual parasites to complex and intelligent succubii. These are spirits and as magick cannot change your species there is no way to beome one of these types of vampire.
The existence of this second kind is debated within the magical community, but it is understood to be a human who has an energetic deficiency and cannot produce enough spiritual energy to thrive. These vampires don't have sweet skills and powers, just weakness and a dependency upon others. It may be possible to cause this within an otherwise healthy person, but that would be the magical equivalent of purposely destroying an organ like the kidney or the spleen, and about as stupid. This is possible, but what people think of for humans-turned-vampire (sexy immortal psychic wizards) is most certainly not and so, in reference to that, one cannot become a vampire and so my previous statement stands with the above elaboration.