well
Sides depend on method. Most here use kits to convert fina to injectable form. Sides specific to this method mostly come from less than sterile preperation of the injectable liquid. It can also cause progesterone sides at very high doses, so anti-estrogens won't work. Alot of guys use winny along with it to help prevent those sides. That or arimidex, but that shit is expensive and fina is often used by us poor bastards.
While on you should be fine, just use clomid after and your nuts will start right back up.
As for the DMSO transdermal method, there is the garlic smell and breath. Never used the other stuff so I can't tell you what it does.
But you will learn more from doing a search here or looking on the fina board/page.