If you have never done an ECA stack before I would start out with 2 pills daily, 1 pill in the morning and one in the evening. This will allow you to adapt to the stack and also to let it wear off before you hit the sack, otherwise you may have problems sleeping.
Once you get adapted to its not uncommon to take 4-6 pills daily depending on your tolerance and weight. ECA affects people differently, so its better to start off light. I personally prefer a 3 times a day dosing using 1-2 pills of the standard EC stack at a time (I don't use the asprin).
If you want just the standard EC stack I would get something like Synergy EC
from Bulknutrition. Your other option is to get some Ephedrine HCL, Caffeine Tabs, and Aspirin and make them yourself. Biotek has some cheap ephedrine hcl
that you can buy online.