How do a sadhaka without a guru take sankalpa and chant Shiva Guru Mantra?

[photoarman 0]

Namaste,

 

I found a mantra that helps a sadhaka get siddhi of any other mantras; it's called Shiva Guru Mantra. 

 

This is surely a blessing for a sadhaka without a guru. But there are no further details for chanting the mantra, like for how many times or days, etc. Is there anyone who has seen this mantra? I have known this mantra for some time, but can not find any other information on the net; so I have not got enough confidence to start chanting. Should we keep chanting the mantra every day OR we may chant it for a period of time like 7 days only and chant it again right before chanting a new mantra? Please if you have surrendered to Lord Shiva and are aware of such a guru mantra, please be sure to tell us the details. I can't say how much I appreciate your help...

 

Om Shivaya Namah!

[photoarman 0]

Has anyone surrendered to Lord Shiva and become his disciple? What's the mantra and ritual that are related to it? Please, for Lord's sake, make it clear for us.