I was crap at maths because I hated it.
Electricity always fascinated me and when at college I was surprised at how quickly I grasped the logic behind the equations, theories, and regulations.
The simple reason was because I was applying the theory to the practical side.
In other words I wanted to know the if's what's and why's.
Don't go in blind and lose yourself.
Always pull back and look at why all those equations are being used, and what there being used for.
In my day we covered the part 1, part 2, and B C&G on day release over a three year combined apprenticeship.
I enjoyed it so much that I covered the C cert on the evenings Tuesday and Thursdays for another year.
That was back in the early 70s and 44 years later I still love it, and I'm still learning.
Once qualified get yourself on the JIB scheme, the card can come in handy at times.
I hold Gold Approved, and Platinum Electrical Site Manager cards, Its something to show for all those days sitting in classrooms doing different courses and exams over the years.
I will say this though, the very best commercial electrical installation electrician I ever worked with was some 15 years ago.
He was a couple of years older than me and he didn't have a single qualification to his name.
He knew how to read a regs book, he knew how to work equations out, and he had my, and others full respect.
You can get those that can spout theory at you from high, and be totally useless when it come down to rolling up there sleeves and cracking on with the job.
Qualifications are useful, but in the real world there not everything.
Its all down to the man on the tools and his experience.
Good luck to you, I love the trade.
Finally !! Sorry for going off subject a bit there. lol