Timing belt changes are coming soon. What do I have to pay attention to?

Good morning people, as the title already reveals, are waiting for me the timing belt. My last change was with the friendly and that cost me a fortune. Didn’t have the opportunity to watch it. I changed several times already (GolfII), but not yet with my. Legacy 2.0R BL/BP EZ: 10/2005 121KW/DOHC. KBA-No. 7106 411 – Is there something special I have to pay attention to? – Can I change it without disassemblying my nose? – How are the positions? – Is there a repair manual? ? – The set consists of – 1x timing belts – 1x tensioning roller – 4x pulleys correct? – Do I need special tools? – Do I need to change WaPu and seals if I don’t lick? – Can I flip the freewheel with my hand after assembly or is it too heavy? – Can you attach pictures to me? I would like to thank you for your help, it’s really expensive to make your CharlyOne friendly.