Sustanon 250? Anabolic steroids?

Hey I have never taken steroids before but I have been curious.
I have a cousin that is a roid head and it shows.
Yesterday he offers me 2 sustanon bottles containing 250ml each because we were talking about how I want to get big or atleast define the muscle I already have before spring break starts.
I'm 18
5'7
145 lbs
I do workout but its not consistent since I'm in college.

Im not doing a cycle (i dont have enough for one anyway)
My question is if I take 250ml this week and 250ml the next week all while working out as much as I can.Will I see any results at all??
I have already done some research on sustanon specifically so I know the longterm side effects/benefits but nothing shows up on short term.

P.S.
All answers are welcome but I'll most likely to listen to someone who has experience with sustanon or similar steroids.

Sustanon 250 is a solution in oil. Each ampoule contains 1 ml

arachis oil containing the following active substances:
- 30 mg Testosterone propionate
- 60 mg Testosterone phenylpropionate
- 60 mg Testosterone isocaproate
- 100 mg Testosterone decanoate
All four components are esters of the natural hormone testosterone.
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