Putting your documents and codes in organized manner is very very primary requirements to manage your tasks properly. As as developer (well although I contain the highest technical position in the current organization I am working on, I believe that still I am developer!), I do feel to take care about it, specially having some standards will help you to find and manage your documents quickly. Here is a basic sample that I maintain for my end (and encourages my team members to keep the same ;) ).
Folder Structure for Software Projects src
project-name-solution
project-name-web-1
project-name-web-2
project-name-bll
project-name-dal
samples
sample-web-1
db
diagrams
mdf
script
doc
analysis
credential-documents
version-and-updates
project-name-versioning.xls
update-requirements v.x.x.doc
primary-client-documents
project-management
proposal-documents
prototypes
srs
technical-documents
testing-documents
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