@darkzmost of the stuff you will need to do by yourself even with an agent (for example your passport, payslips work reference letters, birth certificate, completing forms ect). The big thing with an agent is they guide you with the process and see to it that you don't make mistakes ect(for example see if you have enough points, the right documents, completed everything correctly ect). So you need to do your homework before deciding not to use an agent. Ever case is different so there is no template to say this is step 1,2,3,4. You will find a general step by by step templates on google