Tren is a love it or hate it drug. It is ABSOLUTELY NOT a beginner's drug.
Tren has some sides that are best handled if you are accustomed to using gear and know how to handle the much milder sides of other things like test/deca/eq, before tackling tren.
Tren is known for causing all kinds of sides.
Increased aggression is one of the main ones.
Increased BP is another common one.
Whacked out lipids...
acne...
insomnia...
night sweats...
These are all very common sides of tren and they can be incredibly nasty for some. It is recommended that users start with tren ace for their first run. If you run into these sides and they become intolerable (which they commonly do for some), you can stop tren ace and it clears in a few days. If you run tren enanthate, you are stuck with the stuff in your system for a couple of weeks. that can be a real bear when dealing with high bp!
Tren offers excellent strength gains. It is also known for aiding in burning a bit of fat. I have never noticed much in terms of muscular growth on tren, but more of a body recomp style result.