Self employed renting a chair in salon help

#1
does anyone have a set list that could help me out such as where to start with
tax,
how much stock should i buy and when,
best way to advertise myself for walkins,
how to keep records of what comes in and out, including my rent i pay.
will be a cash only salon so hows best to keep the money stored without a till.
thank you x
 
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