I am guessing it is your 1st cycle?? Without any stats I will just lay it out for you!!
You should be at least 21years old
You should be at least 2-3 years into a solid workout routine
You will need to make sure you have some type of solid diet!! (very important!!)
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375mg -500mg per week for 1st cycle
Inject e3days or every 4 days 175-250mg each injection
You will need an aromitase inhibitor (Need to get Some AIFM ) I am including the link to the Af Store This is a must!!!
https://www.anabolicfitness.net/shop/product_info.php?id=92
You will use 2 to 4 pumps a day and continue using this long after you are done with cycle
Yes running just sustenon on your 1st cycle is fine (you will make good gains)
you will need to run it for at least 8 weeks. preferrably 10-12 weeks
You will need 1.5" 22-23gauge needles ( alternate ass cheaks every injection)
here is a link to show you about injections
http://www.howtodoinjections.com/
Do not drink heavily while cycling
GOOD LUCK .................NINE