Congratulations on your new job and on your interest in learning more about dialysis. There are three types of vascular access for hemodialysis: fistula (1st choice -- uses the patient's own tissue to connect an artery and a vein), graft (2nd choice -- uses artificial tubing to connect the artery and the vein), and catheter (last choice, usually temporary or for patients that cannot have one of the others). The federal government through the Centers for Medicare and Medicaid Services has launched an initiative called Fistula First to promote use of fistulas in dialysis because patients with fistulas have a significantly lower risk of infection, hospitalization, and are less likely to die from these complications than those with other types of hemodialysis access.
You might want to review the modules on Kidney School (www.kidneyschool.org). There is a module (Module 8) that is devoted entirely to vascular access. Other modules include general information about kidney disease, options for treatment, reading and understanding lab tests, coping, sexuality, nutrition, etc.
You can find links to more information about vascular access on this site at (www.homedialysis.org/v1/links/#6).
There are two national organizations for technicians. One is the Council of Nephrology Nurses and Technicians (www.kidney.org/professionals/CNNT/index.cfm) which is a professional council of the National Kidney Foundation. The other is the National Association of Nephrology Technicians/Technologists (www.dialysistech.org). These organizations have helpful tools for technicians.
Good luck with your new job!