Didn't know there were so many?

Thought I'd be able to put it back together but am stuck as I don't know how.How many times i've read that.,

Simple take a digi picture before and at each stage of dismantling and ensure on each take that picture is clear before advancing to next stage. You then have a re-assemble reference. With cables the same colour tape different colour tape to each to identify which goes where.
Everything I work on l take ditital pictures and check each picture is clear and have never had to ask 'How does one put this together'.
Remeber if you are not sure what you are doing then call in an expert.