Newbie

Hi all, I studied level 2 with pitman back in 2011 but never got to sit my exams. I'm starting again from foundation level so I can refresh and get back into studying(I'm 40 so not studied anything for years!) I remember most of it but I'm still struggling to take most of it in. I can do the 'test your understanding' sections but I'm have difficulty explaining it properly when writing it down so its making me frustrated big time as I know I can do it but my answers don't match up with what I written in the book if you know what I mean(told you I can't explain things lol).
I know accuracy is important but can't put my explanations down on paper so they make sense.