300mg per week is a little low. i would recommend going up to 400 to 500mg for your first cycle. you can try ramping up your dosage higher than that but your sides may outweigh your gains. most people make good gains w/ minimal sides @ 500mg. i am starting my first inject cycle in a few days, using 200mg every 4th day (400mg a week) for 10 weeks. if you are looking for increase libido, there are products for that nature pretty cheap on NP's site. i would not recommend doing a high dose of test on your first cycle to get better libido!