Hello mikeyh.Welcome aboard. 
Well here you can really find alot of info about pheromones and alot of info on some products.I am in university too so we have some kind of common situation.I think, for lectures, exams or just around teachers and staff,you should wear 314 as it gives you high status male vibe.When you need less autority and high rank male vibe and more laid back male vibe instead you can consider IG too.
For dates, clubs, fun time with friends or picking up girls you should consider some androstenone product such as ammo or tuth.Be aware though that androstenone is powerfull pheromone and less is enough so start with low dosages and higher it up slowlly till you see some results but do not put too much as you can overdose and the effect is that women will be scared instead of attracted to you.
When it comes to loosen up the atmosphere and make all people around to want to chat with you - you should deffinately consider cttm2.I had great results from it witch you can read about in my cttm2 impressions ( the link is in my signature).
You mentioned you’re interrested in mixing different products as to make nice combinations.I think that this thread and it’s chart can explain you alot about the approximate effect of mixing different products :
I wish you have good time with the mones in both university enviroment and dating/clubbing/pickuping and if you have any questions - don’t hesitate - ask and the users here will help you out.