Newbie query- Level 3 Diploma

Hi everyone,

My local college is offering a 33 week course at level 3 Diploma and I'm very keen to enroll but I'm bit nervous as I've have been out of education for over 10 years and have no experience in writing assessments or referencing etc. I work in a large business and have a basic understanding of some HR processes after being restructured and in consultations etc. several times so I'm hoping this may help slightly. 

Has anyone been in a similar position and if so, how did you find it? Any advice or feedback would be appreciated! 

Thank you.